Home / 518,009,781.60-776,996,701.20-129,836,008.80

Finding the Fourth Proportional to 518,009,781.60, 776,996,701.20 and 129,836,008.80

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Solution

The fourth proportional to 518,009,781.60, 776,996,701.20 and 129,836,008.80 is: 194,749,508.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,009,781.60 : 776,996,701.20 = 129,836,008.80 : x
  2. Step 2: Convert to fraction form
    518,009,781.60/776,996,701.20 = 129,836,008.80/x
  3. Step 3: Cross multiply
    518,009,781.60x = 776,996,701.20 × 129,836,008.80
  4. Step 4: Simplify right side
    518,009,781.60x = 100,882,150,534,574,176
  5. Step 5: Solve for x
    x = 100,882,150,534,574,176/518,009,781.60
  6. Step 6: Final answer
    x = 194,749,508.83

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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.