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Finding the Fourth Proportional to 693,341.40, 956,793.96 and 387,399

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Solution

The fourth proportional to 693,341.40, 956,793.96 and 387,399 is: 534,601.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,341.40 : 956,793.96 = 387,399 : x
  2. Step 2: Convert to fraction form
    693,341.40/956,793.96 = 387,399/x
  3. Step 3: Cross multiply
    693,341.40x = 956,793.96 × 387,399
  4. Step 4: Simplify right side
    693,341.40x = 370,661,023,310.04
  5. Step 5: Solve for x
    x = 370,661,023,310.04/693,341.40
  6. Step 6: Final answer
    x = 534,601.03

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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.