Home / 813,841.39-1,122,845.47-469,632.11

Finding the Fourth Proportional to 813,841.39, 1,122,845.47 and 469,632.11

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Solution

The fourth proportional to 813,841.39, 1,122,845.47 and 469,632.11 is: 647,944.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,841.39 : 1,122,845.47 = 469,632.11 : x
  2. Step 2: Convert to fraction form
    813,841.39/1,122,845.47 = 469,632.11/x
  3. Step 3: Cross multiply
    813,841.39x = 1,122,845.47 × 469,632.11
  4. Step 4: Simplify right side
    813,841.39x = 527,324,284,712.42
  5. Step 5: Solve for x
    x = 527,324,284,712.42/813,841.39
  6. Step 6: Final answer
    x = 647,944.79

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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.