Home / 641,844.60-885,757.86-383,987.04

Finding the Fourth Proportional to 641,844.60, 885,757.86 and 383,987.04

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Solution

The fourth proportional to 641,844.60, 885,757.86 and 383,987.04 is: 529,909.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,844.60 : 885,757.86 = 383,987.04 : x
  2. Step 2: Convert to fraction form
    641,844.60/885,757.86 = 383,987.04/x
  3. Step 3: Cross multiply
    641,844.60x = 885,757.86 × 383,987.04
  4. Step 4: Simplify right side
    641,844.60x = 340,119,538,818.13
  5. Step 5: Solve for x
    x = 340,119,538,818.13/641,844.60
  6. Step 6: Final answer
    x = 529,909.48

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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.