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Finding the Fourth Proportional to 693,132.90, 956,512.85 and 387,213.67

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Solution

The fourth proportional to 693,132.90, 956,512.85 and 387,213.67 is: 534,348.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,132.90 : 956,512.85 = 387,213.67 : x
  2. Step 2: Convert to fraction form
    693,132.90/956,512.85 = 387,213.67/x
  3. Step 3: Cross multiply
    693,132.90x = 956,512.85 × 387,213.67
  4. Step 4: Simplify right side
    693,132.90x = 370,374,847,107.92
  5. Step 5: Solve for x
    x = 370,374,847,107.92/693,132.90
  6. Step 6: Final answer
    x = 534,348.97

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1.5x scale

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.