Home / 585,947.40-878,921.10-142,715.40

Finding the Fourth Proportional to 585,947.40, 878,921.10 and 142,715.40

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Solution

The fourth proportional to 585,947.40, 878,921.10 and 142,715.40 is: 214,073.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,947.40 : 878,921.10 = 142,715.40 : x
  2. Step 2: Convert to fraction form
    585,947.40/878,921.10 = 142,715.40/x
  3. Step 3: Cross multiply
    585,947.40x = 878,921.10 × 142,715.40
  4. Step 4: Simplify right side
    585,947.40x = 125,435,576,354.94
  5. Step 5: Solve for x
    x = 125,435,576,354.94/585,947.40
  6. Step 6: Final answer
    x = 214,073.10

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Half scale
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Double scale
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Similar ratio
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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.