Home / 709,817.17-979,562.55-387,540.85

Finding the Fourth Proportional to 709,817.17, 979,562.55 and 387,540.85

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Solution

The fourth proportional to 709,817.17, 979,562.55 and 387,540.85 is: 534,814.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,817.17 : 979,562.55 = 387,540.85 : x
  2. Step 2: Convert to fraction form
    709,817.17/979,562.55 = 387,540.85/x
  3. Step 3: Cross multiply
    709,817.17x = 979,562.55 × 387,540.85
  4. Step 4: Simplify right side
    709,817.17x = 379,620,503,255.17
  5. Step 5: Solve for x
    x = 379,620,503,255.17/709,817.17
  6. Step 6: Final answer
    x = 534,814.48

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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.