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Finding the Fourth Proportional to 663,742.71, 915,963.26 and 361,936.71

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Solution

The fourth proportional to 663,742.71, 915,963.26 and 361,936.71 is: 499,471.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,742.71 : 915,963.26 = 361,936.71 : x
  2. Step 2: Convert to fraction form
    663,742.71/915,963.26 = 361,936.71/x
  3. Step 3: Cross multiply
    663,742.71x = 915,963.26 × 361,936.71
  4. Step 4: Simplify right side
    663,742.71x = 331,520,726,995.59
  5. Step 5: Solve for x
    x = 331,520,726,995.59/663,742.71
  6. Step 6: Final answer
    x = 499,471.74

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.