Home / 1,287,452.80-1,932,100.80-725,891.20

Finding the Fourth Proportional to 1,287,452.80, 1,932,100.80 and 725,891.20

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Solution

The fourth proportional to 1,287,452.80, 1,932,100.80 and 725,891.20 is: 1,089,356.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,452.80 : 1,932,100.80 = 725,891.20 : x
  2. Step 2: Convert to fraction form
    1,287,452.80/1,932,100.80 = 725,891.20/x
  3. Step 3: Cross multiply
    1,287,452.80x = 1,932,100.80 × 725,891.20
  4. Step 4: Simplify right side
    1,287,452.80x = 1,402,494,968,232.96
  5. Step 5: Solve for x
    x = 1,402,494,968,232.96/1,287,452.80
  6. Step 6: Final answer
    x = 1,089,356.42

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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.