Home / 861,657.76-1,290,480.24-831,763.36

Finding the Fourth Proportional to 861,657.76, 1,290,480.24 and 831,763.36

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Solution

The fourth proportional to 861,657.76, 1,290,480.24 and 831,763.36 is: 1,245,708.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,657.76 : 1,290,480.24 = 831,763.36 : x
  2. Step 2: Convert to fraction form
    861,657.76/1,290,480.24 = 831,763.36/x
  3. Step 3: Cross multiply
    861,657.76x = 1,290,480.24 × 831,763.36
  4. Step 4: Simplify right side
    861,657.76x = 1,073,374,180,436.01
  5. Step 5: Solve for x
    x = 1,073,374,180,436.01/861,657.76
  6. Step 6: Final answer
    x = 1,245,708.25

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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.