Home / 442,687,808.40-664,031,712.60-135,979,429.20

Finding the Fourth Proportional to 442,687,808.40, 664,031,712.60 and 135,979,429.20

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Solution

The fourth proportional to 442,687,808.40, 664,031,712.60 and 135,979,429.20 is: 203,969,143.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,687,808.40 : 664,031,712.60 = 135,979,429.20 : x
  2. Step 2: Convert to fraction form
    442,687,808.40/664,031,712.60 = 135,979,429.20/x
  3. Step 3: Cross multiply
    442,687,808.40x = 664,031,712.60 × 135,979,429.20
  4. Step 4: Simplify right side
    442,687,808.40x = 90,294,653,250,046,448
  5. Step 5: Solve for x
    x = 90,294,653,250,046,448/442,687,808.40
  6. Step 6: Final answer
    x = 203,969,143.80

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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.