Home / 862,131.71-1,189,778.46-480,158.49

Finding the Fourth Proportional to 862,131.71, 1,189,778.46 and 480,158.49

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Solution

The fourth proportional to 862,131.71, 1,189,778.46 and 480,158.49 is: 662,639.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,131.71 : 1,189,778.46 = 480,158.49 : x
  2. Step 2: Convert to fraction form
    862,131.71/1,189,778.46 = 480,158.49/x
  3. Step 3: Cross multiply
    862,131.71x = 1,189,778.46 × 480,158.49
  4. Step 4: Simplify right side
    862,131.71x = 571,282,231,449.20
  5. Step 5: Solve for x
    x = 571,282,231,449.20/862,131.71
  6. Step 6: Final answer
    x = 662,639.16

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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.