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Finding the Fourth Proportional to 654,402.60, 981,603.90 and 629,908.20

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Solution

The fourth proportional to 654,402.60, 981,603.90 and 629,908.20 is: 944,862.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,402.60 : 981,603.90 = 629,908.20 : x
  2. Step 2: Convert to fraction form
    654,402.60/981,603.90 = 629,908.20/x
  3. Step 3: Cross multiply
    654,402.60x = 981,603.90 × 629,908.20
  4. Step 4: Simplify right side
    654,402.60x = 618,320,345,761.98
  5. Step 5: Solve for x
    x = 618,320,345,761.98/654,402.60
  6. Step 6: Final answer
    x = 944,862.30

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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.