Home / 820,116.20-1,230,174.30-654,228.20

Finding the Fourth Proportional to 820,116.20, 1,230,174.30 and 654,228.20

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Solution

The fourth proportional to 820,116.20, 1,230,174.30 and 654,228.20 is: 981,342.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,116.20 : 1,230,174.30 = 654,228.20 : x
  2. Step 2: Convert to fraction form
    820,116.20/1,230,174.30 = 654,228.20/x
  3. Step 3: Cross multiply
    820,116.20x = 1,230,174.30 × 654,228.20
  4. Step 4: Simplify right side
    820,116.20x = 804,814,717,975.26
  5. Step 5: Solve for x
    x = 804,814,717,975.26/820,116.20
  6. Step 6: Final answer
    x = 981,342.30

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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.