Home / 999,690.73-1,499,564.68-392,453.78

Finding the Fourth Proportional to 999,690.73, 1,499,564.68 and 392,453.78

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Solution

The fourth proportional to 999,690.73, 1,499,564.68 and 392,453.78 is: 588,691.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,690.73 : 1,499,564.68 = 392,453.78 : x
  2. Step 2: Convert to fraction form
    999,690.73/1,499,564.68 = 392,453.78/x
  3. Step 3: Cross multiply
    999,690.73x = 1,499,564.68 × 392,453.78
  4. Step 4: Simplify right side
    999,690.73x = 588,509,818,541.53
  5. Step 5: Solve for x
    x = 588,509,818,541.53/999,690.73
  6. Step 6: Final answer
    x = 588,691.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.