Home / 654,362.68-981,147.46-426,828.28

Finding the Fourth Proportional to 654,362.68, 981,147.46 and 426,828.28

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Solution

The fourth proportional to 654,362.68, 981,147.46 and 426,828.28 is: 639,983.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,362.68 : 981,147.46 = 426,828.28 : x
  2. Step 2: Convert to fraction form
    654,362.68/981,147.46 = 426,828.28/x
  3. Step 3: Cross multiply
    654,362.68x = 981,147.46 × 426,828.28
  4. Step 4: Simplify right side
    654,362.68x = 418,781,482,778.17
  5. Step 5: Solve for x
    x = 418,781,482,778.17/654,362.68
  6. Step 6: Final answer
    x = 639,983.75

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Double scale
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1.5x scale

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.