Home / 1,189,400.57-1,640,752.52-730,618.49

Finding the Fourth Proportional to 1,189,400.57, 1,640,752.52 and 730,618.49

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Solution

The fourth proportional to 1,189,400.57, 1,640,752.52 and 730,618.49 is: 1,007,872.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,400.57 : 1,640,752.52 = 730,618.49 : x
  2. Step 2: Convert to fraction form
    1,189,400.57/1,640,752.52 = 730,618.49/x
  3. Step 3: Cross multiply
    1,189,400.57x = 1,640,752.52 × 730,618.49
  4. Step 4: Simplify right side
    1,189,400.57x = 1,198,764,120,422.33
  5. Step 5: Solve for x
    x = 1,198,764,120,422.33/1,189,400.57
  6. Step 6: Final answer
    x = 1,007,872.50

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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.