Home / 312,906,007.20-469,359,010.80-82,910,589.60

Finding the Fourth Proportional to 312,906,007.20, 469,359,010.80 and 82,910,589.60

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Solution

The fourth proportional to 312,906,007.20, 469,359,010.80 and 82,910,589.60 is: 124,365,884.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,906,007.20 : 469,359,010.80 = 82,910,589.60 : x
  2. Step 2: Convert to fraction form
    312,906,007.20/469,359,010.80 = 82,910,589.60/x
  3. Step 3: Cross multiply
    312,906,007.20x = 469,359,010.80 × 82,910,589.60
  4. Step 4: Simplify right side
    312,906,007.20x = 38,914,832,319,500,768
  5. Step 5: Solve for x
    x = 38,914,832,319,500,768/312,906,007.20
  6. Step 6: Final answer
    x = 124,365,884.40

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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.