Home / 518,009,881.10-776,996,850.45-129,836,108.30

Finding the Fourth Proportional to 518,009,881.10, 776,996,850.45 and 129,836,108.30

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Solution

The fourth proportional to 518,009,881.10, 776,996,850.45 and 129,836,108.30 is: 194,749,658.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,009,881.10 : 776,996,850.45 = 129,836,108.30 : x
  2. Step 2: Convert to fraction form
    518,009,881.10/776,996,850.45 = 129,836,108.30/x
  3. Step 3: Cross multiply
    518,009,881.10x = 776,996,850.45 × 129,836,108.30
  4. Step 4: Simplify right side
    518,009,881.10x = 100,882,247,223,785,104
  5. Step 5: Solve for x
    x = 100,882,247,223,785,104/518,009,881.10
  6. Step 6: Final answer
    x = 194,749,658.08

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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.