Home / 498,809.20-688,360.80-283,963.18

Finding the Fourth Proportional to 498,809.20, 688,360.80 and 283,963.18

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Solution

The fourth proportional to 498,809.20, 688,360.80 and 283,963.18 is: 391,871.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,809.20 : 688,360.80 = 283,963.18 : x
  2. Step 2: Convert to fraction form
    498,809.20/688,360.80 = 283,963.18/x
  3. Step 3: Cross multiply
    498,809.20x = 688,360.80 × 283,963.18
  4. Step 4: Simplify right side
    498,809.20x = 195,469,121,755.34
  5. Step 5: Solve for x
    x = 195,469,121,755.34/498,809.20
  6. Step 6: Final answer
    x = 391,871.52

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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.