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Finding the Fourth Proportional to 820,166.80, 1,230,250.20 and 707,973.70

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Solution

The fourth proportional to 820,166.80, 1,230,250.20 and 707,973.70 is: 1,061,960.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,166.80 : 1,230,250.20 = 707,973.70 : x
  2. Step 2: Convert to fraction form
    820,166.80/1,230,250.20 = 707,973.70/x
  3. Step 3: Cross multiply
    820,166.80x = 1,230,250.20 × 707,973.70
  4. Step 4: Simplify right side
    820,166.80x = 870,984,786,019.74
  5. Step 5: Solve for x
    x = 870,984,786,019.74/820,166.80
  6. Step 6: Final answer
    x = 1,061,960.55

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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.