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Finding the Fourth Proportional to 436,448.40, 654,672.60 and 331,472.40

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Solution

The fourth proportional to 436,448.40, 654,672.60 and 331,472.40 is: 497,208.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,448.40 : 654,672.60 = 331,472.40 : x
  2. Step 2: Convert to fraction form
    436,448.40/654,672.60 = 331,472.40/x
  3. Step 3: Cross multiply
    436,448.40x = 654,672.60 × 331,472.40
  4. Step 4: Simplify right side
    436,448.40x = 217,005,897,936.24
  5. Step 5: Solve for x
    x = 217,005,897,936.24/436,448.40
  6. Step 6: Final answer
    x = 497,208.60

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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.