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Finding the Fourth Proportional to 693,423.92, 956,992.92 and 421,468.04

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Solution

The fourth proportional to 693,423.92, 956,992.92 and 421,468.04 is: 581,667.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,423.92 : 956,992.92 = 421,468.04 : x
  2. Step 2: Convert to fraction form
    693,423.92/956,992.92 = 421,468.04/x
  3. Step 3: Cross multiply
    693,423.92x = 956,992.92 × 421,468.04
  4. Step 4: Simplify right side
    693,423.92x = 403,341,930,286.28
  5. Step 5: Solve for x
    x = 403,341,930,286.28/693,423.92
  6. Step 6: Final answer
    x = 581,667.17

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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.