Home / 1,123,632,001.30-1,685,448,001.95-919,390,695.70

Finding the Fourth Proportional to 1,123,632,001.30, 1,685,448,001.95 and 919,390,695.70

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Solution

The fourth proportional to 1,123,632,001.30, 1,685,448,001.95 and 919,390,695.70 is: 1,379,086,043.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,632,001.30 : 1,685,448,001.95 = 919,390,695.70 : x
  2. Step 2: Convert to fraction form
    1,123,632,001.30/1,685,448,001.95 = 919,390,695.70/x
  3. Step 3: Cross multiply
    1,123,632,001.30x = 1,685,448,001.95 × 919,390,695.70
  4. Step 4: Simplify right side
    1,123,632,001.30x = 1,549,585,211,078,985,472
  5. Step 5: Solve for x
    x = 1,549,585,211,078,985,472/1,123,632,001.30
  6. Step 6: Final answer
    x = 1,379,086,043.55

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Half scale
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Double scale
Find fourth proportional to 1,123,632,002.30, 1,685,448,003.45 and 919,390,696.70
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.