Home / 781,246.80-1,078,115.40-441,716.40

Finding the Fourth Proportional to 781,246.80, 1,078,115.40 and 441,716.40

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Solution

The fourth proportional to 781,246.80, 1,078,115.40 and 441,716.40 is: 609,565.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,246.80 : 1,078,115.40 = 441,716.40 : x
  2. Step 2: Convert to fraction form
    781,246.80/1,078,115.40 = 441,716.40/x
  3. Step 3: Cross multiply
    781,246.80x = 1,078,115.40 × 441,716.40
  4. Step 4: Simplify right side
    781,246.80x = 476,221,253,272.56
  5. Step 5: Solve for x
    x = 476,221,253,272.56/781,246.80
  6. Step 6: Final answer
    x = 609,565.70

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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.