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Finding the Fourth Proportional to 663,087.06, 915,060.24 and 361,281.06

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Solution

The fourth proportional to 663,087.06, 915,060.24 and 361,281.06 is: 498,567.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,087.06 : 915,060.24 = 361,281.06 : x
  2. Step 2: Convert to fraction form
    663,087.06/915,060.24 = 361,281.06/x
  3. Step 3: Cross multiply
    663,087.06x = 915,060.24 × 361,281.06
  4. Step 4: Simplify right side
    663,087.06x = 330,593,933,471.05
  5. Step 5: Solve for x
    x = 330,593,933,471.05/663,087.06
  6. Step 6: Final answer
    x = 498,567.92

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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.