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Finding the Fourth Proportional to 621,002.40, 931,503.60 and 508,809.30

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Solution

The fourth proportional to 621,002.40, 931,503.60 and 508,809.30 is: 763,213.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,002.40 : 931,503.60 = 508,809.30 : x
  2. Step 2: Convert to fraction form
    621,002.40/931,503.60 = 508,809.30/x
  3. Step 3: Cross multiply
    621,002.40x = 931,503.60 × 508,809.30
  4. Step 4: Simplify right side
    621,002.40x = 473,957,694,663.48
  5. Step 5: Solve for x
    x = 473,957,694,663.48/621,002.40
  6. Step 6: Final answer
    x = 763,213.95

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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.