Home / 987,935,999.40-1,481,903,999.10-260,924,711.40

Finding the Fourth Proportional to 987,935,999.40, 1,481,903,999.10 and 260,924,711.40

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Solution

The fourth proportional to 987,935,999.40, 1,481,903,999.10 and 260,924,711.40 is: 391,387,067.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,935,999.40 : 1,481,903,999.10 = 260,924,711.40 : x
  2. Step 2: Convert to fraction form
    987,935,999.40/1,481,903,999.10 = 260,924,711.40/x
  3. Step 3: Cross multiply
    987,935,999.40x = 1,481,903,999.10 × 260,924,711.40
  4. Step 4: Simplify right side
    987,935,999.40x = 386,665,373,287,673,344
  5. Step 5: Solve for x
    x = 386,665,373,287,673,344/987,935,999.40
  6. Step 6: Final answer
    x = 391,387,067.10

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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.