Home / 812,462.76-1,121,184.87-449,878.83

Finding the Fourth Proportional to 812,462.76, 1,121,184.87 and 449,878.83

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Solution

The fourth proportional to 812,462.76, 1,121,184.87 and 449,878.83 is: 620,825.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,462.76 : 1,121,184.87 = 449,878.83 : x
  2. Step 2: Convert to fraction form
    812,462.76/1,121,184.87 = 449,878.83/x
  3. Step 3: Cross multiply
    812,462.76x = 1,121,184.87 × 449,878.83
  4. Step 4: Simplify right side
    812,462.76x = 504,397,344,893.66
  5. Step 5: Solve for x
    x = 504,397,344,893.66/812,462.76
  6. Step 6: Final answer
    x = 620,825.19

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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.