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Finding the Fourth Proportional to 654,425.60, 981,638.40 and 233,715.20

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Solution

The fourth proportional to 654,425.60, 981,638.40 and 233,715.20 is: 350,572.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,425.60 : 981,638.40 = 233,715.20 : x
  2. Step 2: Convert to fraction form
    654,425.60/981,638.40 = 233,715.20/x
  3. Step 3: Cross multiply
    654,425.60x = 981,638.40 × 233,715.20
  4. Step 4: Simplify right side
    654,425.60x = 229,423,814,983.68
  5. Step 5: Solve for x
    x = 229,423,814,983.68/654,425.60
  6. Step 6: Final answer
    x = 350,572.80

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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.