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Finding the Fourth Proportional to 663,687.54, 915,889.05 and 377,200.26

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Solution

The fourth proportional to 663,687.54, 915,889.05 and 377,200.26 is: 520,536.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,687.54 : 915,889.05 = 377,200.26 : x
  2. Step 2: Convert to fraction form
    663,687.54/915,889.05 = 377,200.26/x
  3. Step 3: Cross multiply
    663,687.54x = 915,889.05 × 377,200.26
  4. Step 4: Simplify right side
    663,687.54x = 345,473,587,791.15
  5. Step 5: Solve for x
    x = 345,473,587,791.15/663,687.54
  6. Step 6: Final answer
    x = 520,536.50

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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.