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Finding the Fourth Proportional to 450,314.98, 676,245.21 and 399,828.09

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Solution

The fourth proportional to 450,314.98, 676,245.21 and 399,828.09 is: 600,428.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,314.98 : 676,245.21 = 399,828.09 : x
  2. Step 2: Convert to fraction form
    450,314.98/676,245.21 = 399,828.09/x
  3. Step 3: Cross multiply
    450,314.98x = 676,245.21 × 399,828.09
  4. Step 4: Simplify right side
    450,314.98x = 270,381,830,685.95
  5. Step 5: Solve for x
    x = 270,381,830,685.95/450,314.98
  6. Step 6: Final answer
    x = 600,428.24

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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.