Home / 521,800,988.75-780,998,067.10-383,590,013.62

Finding the Fourth Proportional to 521,800,988.75, 780,998,067.10 and 383,590,013.62

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Solution

The fourth proportional to 521,800,988.75, 780,998,067.10 and 383,590,013.62 is: 574,132,793.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,800,988.75 : 780,998,067.10 = 383,590,013.62 : x
  2. Step 2: Convert to fraction form
    521,800,988.75/780,998,067.10 = 383,590,013.62/x
  3. Step 3: Cross multiply
    521,800,988.75x = 780,998,067.10 × 383,590,013.62
  4. Step 4: Simplify right side
    521,800,988.75x = 299,583,059,190,259,776
  5. Step 5: Solve for x
    x = 299,583,059,190,259,776/521,800,988.75
  6. Step 6: Final answer
    x = 574,132,793.25

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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.