Home / 876,399.92-1,209,487.20-494,287.28

Finding the Fourth Proportional to 876,399.92, 1,209,487.20 and 494,287.28

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Solution

The fourth proportional to 876,399.92, 1,209,487.20 and 494,287.28 is: 682,147.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,399.92 : 1,209,487.20 = 494,287.28 : x
  2. Step 2: Convert to fraction form
    876,399.92/1,209,487.20 = 494,287.28/x
  3. Step 3: Cross multiply
    876,399.92x = 1,209,487.20 × 494,287.28
  4. Step 4: Simplify right side
    876,399.92x = 597,834,138,282.82
  5. Step 5: Solve for x
    x = 597,834,138,282.82/876,399.92
  6. Step 6: Final answer
    x = 682,147.64

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1.5x scale

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.