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Finding the Fourth Proportional to 498,776.50, 688,311.57 and 272,422.54

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Solution

The fourth proportional to 498,776.50, 688,311.57 and 272,422.54 is: 375,943.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,776.50 : 688,311.57 = 272,422.54 : x
  2. Step 2: Convert to fraction form
    498,776.50/688,311.57 = 272,422.54/x
  3. Step 3: Cross multiply
    498,776.50x = 688,311.57 × 272,422.54
  4. Step 4: Simplify right side
    498,776.50x = 187,511,586,210.79
  5. Step 5: Solve for x
    x = 187,511,586,210.79/498,776.50
  6. Step 6: Final answer
    x = 375,943.11

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1.5x scale

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.