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Finding the Fourth Proportional to 663,437.24, 915,543.42 and 361,631.24

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Solution

The fourth proportional to 663,437.24, 915,543.42 and 361,631.24 is: 499,051.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,437.24 : 915,543.42 = 361,631.24 : x
  2. Step 2: Convert to fraction form
    663,437.24/915,543.42 = 361,631.24/x
  3. Step 3: Cross multiply
    663,437.24x = 915,543.42 × 361,631.24
  4. Step 4: Simplify right side
    663,437.24x = 331,089,102,248.44
  5. Step 5: Solve for x
    x = 331,089,102,248.44/663,437.24
  6. Step 6: Final answer
    x = 499,051.13

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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.