Home / 518,009,887.35-776,996,859.83-129,836,114.55

Finding the Fourth Proportional to 518,009,887.35, 776,996,859.83 and 129,836,114.55

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Solution

The fourth proportional to 518,009,887.35, 776,996,859.83 and 129,836,114.55 is: 194,749,667.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,009,887.35 : 776,996,859.83 = 129,836,114.55 : x
  2. Step 2: Convert to fraction form
    518,009,887.35/776,996,859.83 = 129,836,114.55/x
  3. Step 3: Cross multiply
    518,009,887.35x = 776,996,859.83 × 129,836,114.55
  4. Step 4: Simplify right side
    518,009,887.35x = 100,882,253,297,228,992
  5. Step 5: Solve for x
    x = 100,882,253,297,228,992/518,009,887.35
  6. Step 6: Final answer
    x = 194,749,667.45

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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.