Home / 916,645,198.31-1,375,066,193.87-392,068,780.91

Finding the Fourth Proportional to 916,645,198.31, 1,375,066,193.87 and 392,068,780.91

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Solution

The fourth proportional to 916,645,198.31, 1,375,066,193.87 and 392,068,780.91 is: 588,145,257.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,645,198.31 : 1,375,066,193.87 = 392,068,780.91 : x
  2. Step 2: Convert to fraction form
    916,645,198.31/1,375,066,193.87 = 392,068,780.91/x
  3. Step 3: Cross multiply
    916,645,198.31x = 1,375,066,193.87 × 392,068,780.91
  4. Step 4: Simplify right side
    916,645,198.31x = 539,120,526,301,164,608
  5. Step 5: Solve for x
    x = 539,120,526,301,164,608/916,645,198.31
  6. Step 6: Final answer
    x = 588,145,257.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.