Home / 880,680.38-1,215,338.90-498,780.97

Finding the Fourth Proportional to 880,680.38, 1,215,338.90 and 498,780.97

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Solution

The fourth proportional to 880,680.38, 1,215,338.90 and 498,780.97 is: 688,317.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,680.38 : 1,215,338.90 = 498,780.97 : x
  2. Step 2: Convert to fraction form
    880,680.38/1,215,338.90 = 498,780.97/x
  3. Step 3: Cross multiply
    880,680.38x = 1,215,338.90 × 498,780.97
  4. Step 4: Simplify right side
    880,680.38x = 606,187,915,420.73
  5. Step 5: Solve for x
    x = 606,187,915,420.73/880,680.38
  6. Step 6: Final answer
    x = 688,317.72

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Double scale
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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.