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Finding the Fourth Proportional to 448,523.74, 672,785.61 and 307,855.90

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Solution

The fourth proportional to 448,523.74, 672,785.61 and 307,855.90 is: 461,783.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,523.74 : 672,785.61 = 307,855.90 : x
  2. Step 2: Convert to fraction form
    448,523.74/672,785.61 = 307,855.90/x
  3. Step 3: Cross multiply
    448,523.74x = 672,785.61 × 307,855.90
  4. Step 4: Simplify right side
    448,523.74x = 207,121,019,473.60
  5. Step 5: Solve for x
    x = 207,121,019,473.60/448,523.74
  6. Step 6: Final answer
    x = 461,783.85

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Similar ratio
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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.