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Finding the Fourth Proportional to 450,326.48, 676,263.28 and 399,839.20

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Solution

The fourth proportional to 450,326.48, 676,263.28 and 399,839.20 is: 600,445.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,326.48 : 676,263.28 = 399,839.20 : x
  2. Step 2: Convert to fraction form
    450,326.48/676,263.28 = 399,839.20/x
  3. Step 3: Cross multiply
    450,326.48x = 676,263.28 × 399,839.20
  4. Step 4: Simplify right side
    450,326.48x = 270,396,568,864.58
  5. Step 5: Solve for x
    x = 270,396,568,864.58/450,326.48
  6. Step 6: Final answer
    x = 600,445.63

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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.