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Finding the Fourth Proportional to 709,443, 979,052.04 and 387,173.76

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Solution

The fourth proportional to 709,443, 979,052.04 and 387,173.76 is: 534,311.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,443 : 979,052.04 = 387,173.76 : x
  2. Step 2: Convert to fraction form
    709,443/979,052.04 = 387,173.76/x
  3. Step 3: Cross multiply
    709,443x = 979,052.04 × 387,173.76
  4. Step 4: Simplify right side
    709,443x = 379,063,259,562.47
  5. Step 5: Solve for x
    x = 379,063,259,562.47/709,443
  6. Step 6: Final answer
    x = 534,311.09

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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.