Home / 657,108.70-985,116.30-278,320.30

Finding the Fourth Proportional to 657,108.70, 985,116.30 and 278,320.30

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Solution

The fourth proportional to 657,108.70, 985,116.30 and 278,320.30 is: 417,248.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,108.70 : 985,116.30 = 278,320.30 : x
  2. Step 2: Convert to fraction form
    657,108.70/985,116.30 = 278,320.30/x
  3. Step 3: Cross multiply
    657,108.70x = 985,116.30 × 278,320.30
  4. Step 4: Simplify right side
    657,108.70x = 274,177,864,150.89
  5. Step 5: Solve for x
    x = 274,177,864,150.89/657,108.70
  6. Step 6: Final answer
    x = 417,248.87

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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.