Home / 861,546.87-1,292,320.49-387,678.60

Finding the Fourth Proportional to 861,546.87, 1,292,320.49 and 387,678.60

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Solution

The fourth proportional to 861,546.87, 1,292,320.49 and 387,678.60 is: 581,517.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,546.87 : 1,292,320.49 = 387,678.60 : x
  2. Step 2: Convert to fraction form
    861,546.87/1,292,320.49 = 387,678.60/x
  3. Step 3: Cross multiply
    861,546.87x = 1,292,320.49 × 387,678.60
  4. Step 4: Simplify right side
    861,546.87x = 501,004,996,376.12
  5. Step 5: Solve for x
    x = 501,004,996,376.12/861,546.87
  6. Step 6: Final answer
    x = 581,517.98

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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.