Home / 861,787.88-1,189,275.47-479,822.86

Finding the Fourth Proportional to 861,787.88, 1,189,275.47 and 479,822.86

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Solution

The fourth proportional to 861,787.88, 1,189,275.47 and 479,822.86 is: 662,160.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,787.88 : 1,189,275.47 = 479,822.86 : x
  2. Step 2: Convert to fraction form
    861,787.88/1,189,275.47 = 479,822.86/x
  3. Step 3: Cross multiply
    861,787.88x = 1,189,275.47 × 479,822.86
  4. Step 4: Simplify right side
    861,787.88x = 570,641,555,569.61
  5. Step 5: Solve for x
    x = 570,641,555,569.61/861,787.88
  6. Step 6: Final answer
    x = 662,160.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.