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Finding the Fourth Proportional to 448,061.70, 672,092.55 and 399,072.90

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Solution

The fourth proportional to 448,061.70, 672,092.55 and 399,072.90 is: 598,609.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,061.70 : 672,092.55 = 399,072.90 : x
  2. Step 2: Convert to fraction form
    448,061.70/672,092.55 = 399,072.90/x
  3. Step 3: Cross multiply
    448,061.70x = 672,092.55 × 399,072.90
  4. Step 4: Simplify right side
    448,061.70x = 268,213,922,996.90
  5. Step 5: Solve for x
    x = 268,213,922,996.90/448,061.70
  6. Step 6: Final answer
    x = 598,609.35

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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.