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Finding the Fourth Proportional to 687,292.38, 948,468.54 and 381,369.96

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Solution

The fourth proportional to 687,292.38, 948,468.54 and 381,369.96 is: 526,293.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,292.38 : 948,468.54 = 381,369.96 : x
  2. Step 2: Convert to fraction form
    687,292.38/948,468.54 = 381,369.96/x
  3. Step 3: Cross multiply
    687,292.38x = 948,468.54 × 381,369.96
  4. Step 4: Simplify right side
    687,292.38x = 361,717,409,161.06
  5. Step 5: Solve for x
    x = 361,717,409,161.06/687,292.38
  6. Step 6: Final answer
    x = 526,293.35

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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.