Home / 478,469,470.56-660,288,158.64-258,452,993.76

Finding the Fourth Proportional to 478,469,470.56, 660,288,158.64 and 258,452,993.76

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Solution

The fourth proportional to 478,469,470.56, 660,288,158.64 and 258,452,993.76 is: 356,665,287.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,469,470.56 : 660,288,158.64 = 258,452,993.76 : x
  2. Step 2: Convert to fraction form
    478,469,470.56/660,288,158.64 = 258,452,993.76/x
  3. Step 3: Cross multiply
    478,469,470.56x = 660,288,158.64 × 258,452,993.76
  4. Step 4: Simplify right side
    478,469,470.56x = 170,653,451,344,785,792
  5. Step 5: Solve for x
    x = 170,653,451,344,785,792/478,469,470.56
  6. Step 6: Final answer
    x = 356,665,287.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.