Home / 478,469,473.56-660,288,162.78-258,452,996.76

Finding the Fourth Proportional to 478,469,473.56, 660,288,162.78 and 258,452,996.76

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Solution

The fourth proportional to 478,469,473.56, 660,288,162.78 and 258,452,996.76 is: 356,665,291.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,469,473.56 : 660,288,162.78 = 258,452,996.76 : x
  2. Step 2: Convert to fraction form
    478,469,473.56/660,288,162.78 = 258,452,996.76/x
  3. Step 3: Cross multiply
    478,469,473.56x = 660,288,162.78 × 258,452,996.76
  4. Step 4: Simplify right side
    478,469,473.56x = 170,653,454,395,645,664
  5. Step 5: Solve for x
    x = 170,653,454,395,645,664/478,469,473.56
  6. Step 6: Final answer
    x = 356,665,291.78

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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.