Home / 812,850.40-1,121,685.56-445,254.43

Finding the Fourth Proportional to 812,850.40, 1,121,685.56 and 445,254.43

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Solution

The fourth proportional to 812,850.40, 1,121,685.56 and 445,254.43 is: 614,424.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,850.40 : 1,121,685.56 = 445,254.43 : x
  2. Step 2: Convert to fraction form
    812,850.40/1,121,685.56 = 445,254.43/x
  3. Step 3: Cross multiply
    812,850.40x = 1,121,685.56 × 445,254.43
  4. Step 4: Simplify right side
    812,850.40x = 499,435,464,657.03
  5. Step 5: Solve for x
    x = 499,435,464,657.03/812,850.40
  6. Step 6: Final answer
    x = 614,424.82

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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.