Home / 861,513.01-1,292,269.82-387,644.78

Finding the Fourth Proportional to 861,513.01, 1,292,269.82 and 387,644.78

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Solution

The fourth proportional to 861,513.01, 1,292,269.82 and 387,644.78 is: 581,467.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,513.01 : 1,292,269.82 = 387,644.78 : x
  2. Step 2: Convert to fraction form
    861,513.01/1,292,269.82 = 387,644.78/x
  3. Step 3: Cross multiply
    861,513.01x = 1,292,269.82 × 387,644.78
  4. Step 4: Simplify right side
    861,513.01x = 500,941,651,366.99
  5. Step 5: Solve for x
    x = 500,941,651,366.99/861,513.01
  6. Step 6: Final answer
    x = 581,467.31

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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.