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Finding the Fourth Proportional to 724,191.30, 999,406.71 and 418,261.95

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Solution

The fourth proportional to 724,191.30, 999,406.71 and 418,261.95 is: 577,214.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,191.30 : 999,406.71 = 418,261.95 : x
  2. Step 2: Convert to fraction form
    724,191.30/999,406.71 = 418,261.95/x
  3. Step 3: Cross multiply
    724,191.30x = 999,406.71 × 418,261.95
  4. Step 4: Simplify right side
    724,191.30x = 418,013,799,367.69
  5. Step 5: Solve for x
    x = 418,013,799,367.69/724,191.30
  6. Step 6: Final answer
    x = 577,214.61

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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.