Home / 1,759,542.20-2,640,640.18-1,287,445.56

Finding the Fourth Proportional to 1,759,542.20, 2,640,640.18 and 1,287,445.56

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Solution

The fourth proportional to 1,759,542.20, 2,640,640.18 and 1,287,445.56 is: 1,932,139.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,759,542.20 : 2,640,640.18 = 1,287,445.56 : x
  2. Step 2: Convert to fraction form
    1,759,542.20/2,640,640.18 = 1,287,445.56/x
  3. Step 3: Cross multiply
    1,759,542.20x = 2,640,640.18 × 1,287,445.56
  4. Step 4: Simplify right side
    1,759,542.20x = 3,399,680,475,298.60
  5. Step 5: Solve for x
    x = 3,399,680,475,298.60/1,759,542.20
  6. Step 6: Final answer
    x = 1,932,139.21

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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.