Home / 398,681,119.20-597,909,704.40-126,135,429.60

Finding the Fourth Proportional to 398,681,119.20, 597,909,704.40 and 126,135,429.60

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Solution

The fourth proportional to 398,681,119.20, 597,909,704.40 and 126,135,429.60 is: 189,167,717.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,681,119.20 : 597,909,704.40 = 126,135,429.60 : x
  2. Step 2: Convert to fraction form
    398,681,119.20/597,909,704.40 = 126,135,429.60/x
  3. Step 3: Cross multiply
    398,681,119.20x = 597,909,704.40 × 126,135,429.60
  4. Step 4: Simplify right side
    398,681,119.20x = 75,417,597,426,503,008
  5. Step 5: Solve for x
    x = 75,417,597,426,503,008/398,681,119.20
  6. Step 6: Final answer
    x = 189,167,717.74

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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.