Home / 724,376.45-999,684.78-418,465.73

Finding the Fourth Proportional to 724,376.45, 999,684.78 and 418,465.73

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Solution

The fourth proportional to 724,376.45, 999,684.78 and 418,465.73 is: 577,508.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,376.45 : 999,684.78 = 418,465.73 : x
  2. Step 2: Convert to fraction form
    724,376.45/999,684.78 = 418,465.73/x
  3. Step 3: Cross multiply
    724,376.45x = 999,684.78 × 418,465.73
  4. Step 4: Simplify right side
    724,376.45x = 418,333,816,234.17
  5. Step 5: Solve for x
    x = 418,333,816,234.17/724,376.45
  6. Step 6: Final answer
    x = 577,508.86

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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.