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Finding the Fourth Proportional to 610,936.40, 916,404.60 and 327,501.20

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Solution

The fourth proportional to 610,936.40, 916,404.60 and 327,501.20 is: 491,251.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,936.40 : 916,404.60 = 327,501.20 : x
  2. Step 2: Convert to fraction form
    610,936.40/916,404.60 = 327,501.20/x
  3. Step 3: Cross multiply
    610,936.40x = 916,404.60 × 327,501.20
  4. Step 4: Simplify right side
    610,936.40x = 300,123,606,185.52
  5. Step 5: Solve for x
    x = 300,123,606,185.52/610,936.40
  6. Step 6: Final answer
    x = 491,251.80

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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.