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Finding the Fourth Proportional to 661,505.15, 992,257.73 and 482,171.15

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Solution

The fourth proportional to 661,505.15, 992,257.73 and 482,171.15 is: 723,256.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,505.15 : 992,257.73 = 482,171.15 : x
  2. Step 2: Convert to fraction form
    661,505.15/992,257.73 = 482,171.15/x
  3. Step 3: Cross multiply
    661,505.15x = 992,257.73 × 482,171.15
  4. Step 4: Simplify right side
    661,505.15x = 478,438,048,359.63
  5. Step 5: Solve for x
    x = 478,438,048,359.63/661,505.15
  6. Step 6: Final answer
    x = 723,256.73

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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.