Home / 724,470.47-999,719.11-402,155.10

Finding the Fourth Proportional to 724,470.47, 999,719.11 and 402,155.10

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Solution

The fourth proportional to 724,470.47, 999,719.11 and 402,155.10 is: 554,946.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,470.47 : 999,719.11 = 402,155.10 : x
  2. Step 2: Convert to fraction form
    724,470.47/999,719.11 = 402,155.10/x
  3. Step 3: Cross multiply
    724,470.47x = 999,719.11 × 402,155.10
  4. Step 4: Simplify right side
    724,470.47x = 402,042,138,653.96
  5. Step 5: Solve for x
    x = 402,042,138,653.96/724,470.47
  6. Step 6: Final answer
    x = 554,946.21

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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.