Home / 665,557.20-998,335.80-455,605.20

Finding the Fourth Proportional to 665,557.20, 998,335.80 and 455,605.20

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Solution

The fourth proportional to 665,557.20, 998,335.80 and 455,605.20 is: 683,407.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,557.20 : 998,335.80 = 455,605.20 : x
  2. Step 2: Convert to fraction form
    665,557.20/998,335.80 = 455,605.20/x
  3. Step 3: Cross multiply
    665,557.20x = 998,335.80 × 455,605.20
  4. Step 4: Simplify right side
    665,557.20x = 454,846,981,826.16
  5. Step 5: Solve for x
    x = 454,846,981,826.16/665,557.20
  6. Step 6: Final answer
    x = 683,407.80

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Similar ratio
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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.