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Finding the Fourth Proportional to 687,652.72, 948,988.24 and 377,567.70

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Solution

The fourth proportional to 687,652.72, 948,988.24 and 377,567.70 is: 521,058.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,652.72 : 948,988.24 = 377,567.70 : x
  2. Step 2: Convert to fraction form
    687,652.72/948,988.24 = 377,567.70/x
  3. Step 3: Cross multiply
    687,652.72x = 948,988.24 × 377,567.70
  4. Step 4: Simplify right side
    687,652.72x = 358,307,307,103.85
  5. Step 5: Solve for x
    x = 358,307,307,103.85/687,652.72
  6. Step 6: Final answer
    x = 521,058.52

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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.