Home / 861,776.89-1,189,761.35-766,006.74

Finding the Fourth Proportional to 861,776.89, 1,189,761.35 and 766,006.74

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Solution

The fourth proportional to 861,776.89, 1,189,761.35 and 766,006.74 is: 1,057,541.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,776.89 : 1,189,761.35 = 766,006.74 : x
  2. Step 2: Convert to fraction form
    861,776.89/1,189,761.35 = 766,006.74/x
  3. Step 3: Cross multiply
    861,776.89x = 1,189,761.35 × 766,006.74
  4. Step 4: Simplify right side
    861,776.89x = 911,365,209,261.47
  5. Step 5: Solve for x
    x = 911,365,209,261.47/861,776.89
  6. Step 6: Final answer
    x = 1,057,541.95

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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.