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Finding the Fourth Proportional to 587,106.20, 810,454.62 and 396,377.96

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Solution

The fourth proportional to 587,106.20, 810,454.62 and 396,377.96 is: 547,169.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,106.20 : 810,454.62 = 396,377.96 : x
  2. Step 2: Convert to fraction form
    587,106.20/810,454.62 = 396,377.96/x
  3. Step 3: Cross multiply
    587,106.20x = 810,454.62 × 396,377.96
  4. Step 4: Simplify right side
    587,106.20x = 321,246,348,948.18
  5. Step 5: Solve for x
    x = 321,246,348,948.18/587,106.20
  6. Step 6: Final answer
    x = 547,169.06

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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.