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Finding the Fourth Proportional to 724,156.71, 999,234.25 and 433,700.21

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Solution

The fourth proportional to 724,156.71, 999,234.25 and 433,700.21 is: 598,445.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,156.71 : 999,234.25 = 433,700.21 : x
  2. Step 2: Convert to fraction form
    724,156.71/999,234.25 = 433,700.21/x
  3. Step 3: Cross multiply
    724,156.71x = 999,234.25 × 433,700.21
  4. Step 4: Simplify right side
    724,156.71x = 433,368,105,478.03
  5. Step 5: Solve for x
    x = 433,368,105,478.03/724,156.71
  6. Step 6: Final answer
    x = 598,445.20

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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.