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Finding the Fourth Proportional to 866,791.80, 1,300,187.70 and 547,927.20

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Solution

The fourth proportional to 866,791.80, 1,300,187.70 and 547,927.20 is: 821,890.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,791.80 : 1,300,187.70 = 547,927.20 : x
  2. Step 2: Convert to fraction form
    866,791.80/1,300,187.70 = 547,927.20/x
  3. Step 3: Cross multiply
    866,791.80x = 1,300,187.70 × 547,927.20
  4. Step 4: Simplify right side
    866,791.80x = 712,408,205,935.44
  5. Step 5: Solve for x
    x = 712,408,205,935.44/866,791.80
  6. Step 6: Final answer
    x = 821,890.80

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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.