Home / 687,244,459.52-948,397,508.80-378,195,115.52

Finding the Fourth Proportional to 687,244,459.52, 948,397,508.80 and 378,195,115.52

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Solution

The fourth proportional to 687,244,459.52, 948,397,508.80 and 378,195,115.52 is: 521,909,344.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,244,459.52 : 948,397,508.80 = 378,195,115.52 : x
  2. Step 2: Convert to fraction form
    687,244,459.52/948,397,508.80 = 378,195,115.52/x
  3. Step 3: Cross multiply
    687,244,459.52x = 948,397,508.80 × 378,195,115.52
  4. Step 4: Simplify right side
    687,244,459.52x = 358,679,305,399,496,192
  5. Step 5: Solve for x
    x = 358,679,305,399,496,192/687,244,459.52
  6. Step 6: Final answer
    x = 521,909,344.53

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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.