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Finding the Fourth Proportional to 629,945.80, 944,918.70 and 488,228.20

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Solution

The fourth proportional to 629,945.80, 944,918.70 and 488,228.20 is: 732,342.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,945.80 : 944,918.70 = 488,228.20 : x
  2. Step 2: Convert to fraction form
    629,945.80/944,918.70 = 488,228.20/x
  3. Step 3: Cross multiply
    629,945.80x = 944,918.70 × 488,228.20
  4. Step 4: Simplify right side
    629,945.80x = 461,335,956,047.34
  5. Step 5: Solve for x
    x = 461,335,956,047.34/629,945.80
  6. Step 6: Final answer
    x = 732,342.30

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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.