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Finding the Fourth Proportional to 448,092.20, 672,138.30 and 399,103.40

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Solution

The fourth proportional to 448,092.20, 672,138.30 and 399,103.40 is: 598,655.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,092.20 : 672,138.30 = 399,103.40 : x
  2. Step 2: Convert to fraction form
    448,092.20/672,138.30 = 399,103.40/x
  3. Step 3: Cross multiply
    448,092.20x = 672,138.30 × 399,103.40
  4. Step 4: Simplify right side
    448,092.20x = 268,252,680,800.22
  5. Step 5: Solve for x
    x = 268,252,680,800.22/448,092.20
  6. Step 6: Final answer
    x = 598,655.10

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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.