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Finding the Fourth Proportional to 654,228.30, 981,342.45 and 654,228.30

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Solution

The fourth proportional to 654,228.30, 981,342.45 and 654,228.30 is: 981,342.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,228.30 : 981,342.45 = 654,228.30 : x
  2. Step 2: Convert to fraction form
    654,228.30/981,342.45 = 654,228.30/x
  3. Step 3: Cross multiply
    654,228.30x = 981,342.45 × 654,228.30
  4. Step 4: Simplify right side
    654,228.30x = 642,022,002,781.34
  5. Step 5: Solve for x
    x = 642,022,002,781.34/654,228.30
  6. Step 6: Final answer
    x = 981,342.45

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Half scale
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Double scale
Find fourth proportional to 654,229.30, 981,343.95 and 654,229.30
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.