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Finding the Fourth Proportional to 654,377.90, 981,566.84 and 205,101.12

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Solution

The fourth proportional to 654,377.90, 981,566.84 and 205,101.12 is: 307,651.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,377.90 : 981,566.84 = 205,101.12 : x
  2. Step 2: Convert to fraction form
    654,377.90/981,566.84 = 205,101.12/x
  3. Step 3: Cross multiply
    654,377.90x = 981,566.84 × 205,101.12
  4. Step 4: Simplify right side
    654,377.90x = 201,320,456,911.18
  5. Step 5: Solve for x
    x = 201,320,456,911.18/654,377.90
  6. Step 6: Final answer
    x = 307,651.68

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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.