Home / 1,123,632,001.05-1,685,448,001.58-919,390,695.45

Finding the Fourth Proportional to 1,123,632,001.05, 1,685,448,001.58 and 919,390,695.45

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Solution

The fourth proportional to 1,123,632,001.05, 1,685,448,001.58 and 919,390,695.45 is: 1,379,086,043.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,632,001.05 : 1,685,448,001.58 = 919,390,695.45 : x
  2. Step 2: Convert to fraction form
    1,123,632,001.05/1,685,448,001.58 = 919,390,695.45/x
  3. Step 3: Cross multiply
    1,123,632,001.05x = 1,685,448,001.58 × 919,390,695.45
  4. Step 4: Simplify right side
    1,123,632,001.05x = 1,549,585,210,312,851,968
  5. Step 5: Solve for x
    x = 1,549,585,210,312,851,968/1,123,632,001.05
  6. Step 6: Final answer
    x = 1,379,086,043.18

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Half scale
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Double scale
Find fourth proportional to 1,123,632,002.05, 1,685,448,003.08 and 919,390,696.45
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.