Home / 724,430.20-999,666.30-402,140.20

Finding the Fourth Proportional to 724,430.20, 999,666.30 and 402,140.20

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Solution

The fourth proportional to 724,430.20, 999,666.30 and 402,140.20 is: 554,927.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,430.20 : 999,666.30 = 402,140.20 : x
  2. Step 2: Convert to fraction form
    724,430.20/999,666.30 = 402,140.20/x
  3. Step 3: Cross multiply
    724,430.20x = 999,666.30 × 402,140.20
  4. Step 4: Simplify right side
    724,430.20x = 402,006,005,815.26
  5. Step 5: Solve for x
    x = 402,006,005,815.26/724,430.20
  6. Step 6: Final answer
    x = 554,927.18

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.