Home / 1,487,619.20-2,233,761.60-857,763.20

Finding the Fourth Proportional to 1,487,619.20, 2,233,761.60 and 857,763.20

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Solution

The fourth proportional to 1,487,619.20, 2,233,761.60 and 857,763.20 is: 1,287,989.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487,619.20 : 2,233,761.60 = 857,763.20 : x
  2. Step 2: Convert to fraction form
    1,487,619.20/2,233,761.60 = 857,763.20/x
  3. Step 3: Cross multiply
    1,487,619.20x = 2,233,761.60 × 857,763.20
  4. Step 4: Simplify right side
    1,487,619.20x = 1,916,038,498,053.12
  5. Step 5: Solve for x
    x = 1,916,038,498,053.12/1,487,619.20
  6. Step 6: Final answer
    x = 1,287,989.90

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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.