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Finding the Fourth Proportional to 387,605.39, 535,059.47 and 363,392.87

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Solution

The fourth proportional to 387,605.39, 535,059.47 and 363,392.87 is: 501,635.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,605.39 : 535,059.47 = 363,392.87 : x
  2. Step 2: Convert to fraction form
    387,605.39/535,059.47 = 363,392.87/x
  3. Step 3: Cross multiply
    387,605.39x = 535,059.47 × 363,392.87
  4. Step 4: Simplify right side
    387,605.39x = 194,436,794,657.16
  5. Step 5: Solve for x
    x = 194,436,794,657.16/387,605.39
  6. Step 6: Final answer
    x = 501,635.95

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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.