Home / 820,147.80-1,230,221.70-482,842.20

Finding the Fourth Proportional to 820,147.80, 1,230,221.70 and 482,842.20

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Solution

The fourth proportional to 820,147.80, 1,230,221.70 and 482,842.20 is: 724,263.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,147.80 : 1,230,221.70 = 482,842.20 : x
  2. Step 2: Convert to fraction form
    820,147.80/1,230,221.70 = 482,842.20/x
  3. Step 3: Cross multiply
    820,147.80x = 1,230,221.70 × 482,842.20
  4. Step 4: Simplify right side
    820,147.80x = 594,002,952,115.74
  5. Step 5: Solve for x
    x = 594,002,952,115.74/820,147.80
  6. Step 6: Final answer
    x = 724,263.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.