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Finding the Fourth Proportional to 625,468.32, 863,150.55 and 338,993.19

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Solution

The fourth proportional to 625,468.32, 863,150.55 and 338,993.19 is: 467,812.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,468.32 : 863,150.55 = 338,993.19 : x
  2. Step 2: Convert to fraction form
    625,468.32/863,150.55 = 338,993.19/x
  3. Step 3: Cross multiply
    625,468.32x = 863,150.55 × 338,993.19
  4. Step 4: Simplify right side
    625,468.32x = 292,602,156,699.79
  5. Step 5: Solve for x
    x = 292,602,156,699.79/625,468.32
  6. Step 6: Final answer
    x = 467,812.91

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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.