Home / 767,897.80-1,151,328.30-408,128.20

Finding the Fourth Proportional to 767,897.80, 1,151,328.30 and 408,128.20

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Solution

The fourth proportional to 767,897.80, 1,151,328.30 and 408,128.20 is: 611,916.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,897.80 : 1,151,328.30 = 408,128.20 : x
  2. Step 2: Convert to fraction form
    767,897.80/1,151,328.30 = 408,128.20/x
  3. Step 3: Cross multiply
    767,897.80x = 1,151,328.30 × 408,128.20
  4. Step 4: Simplify right side
    767,897.80x = 469,889,546,688.06
  5. Step 5: Solve for x
    x = 469,889,546,688.06/767,897.80
  6. Step 6: Final answer
    x = 611,916.78

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Double scale
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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.