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Finding the Fourth Proportional to 654,442.80, 981,664.20 and 355,066.80

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Solution

The fourth proportional to 654,442.80, 981,664.20 and 355,066.80 is: 532,600.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,442.80 : 981,664.20 = 355,066.80 : x
  2. Step 2: Convert to fraction form
    654,442.80/981,664.20 = 355,066.80/x
  3. Step 3: Cross multiply
    654,442.80x = 981,664.20 × 355,066.80
  4. Step 4: Simplify right side
    654,442.80x = 348,556,366,168.56
  5. Step 5: Solve for x
    x = 348,556,366,168.56/654,442.80
  6. Step 6: Final answer
    x = 532,600.20

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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.