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Finding the Fourth Proportional to 521,232.88, 718,671 and 440,518

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Solution

The fourth proportional to 521,232.88, 718,671 and 440,518 is: 607,382.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,232.88 : 718,671 = 440,518 : x
  2. Step 2: Convert to fraction form
    521,232.88/718,671 = 440,518/x
  3. Step 3: Cross multiply
    521,232.88x = 718,671 × 440,518
  4. Step 4: Simplify right side
    521,232.88x = 316,587,511,578
  5. Step 5: Solve for x
    x = 316,587,511,578/521,232.88
  6. Step 6: Final answer
    x = 607,382.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.