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Finding the Fourth Proportional to 519,671.08, 717,641.33 and 491,367.55

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Solution

The fourth proportional to 519,671.08, 717,641.33 and 491,367.55 is: 678,555.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,671.08 : 717,641.33 = 491,367.55 : x
  2. Step 2: Convert to fraction form
    519,671.08/717,641.33 = 491,367.55/x
  3. Step 3: Cross multiply
    519,671.08x = 717,641.33 × 491,367.55
  4. Step 4: Simplify right side
    519,671.08x = 352,625,662,100.84
  5. Step 5: Solve for x
    x = 352,625,662,100.84/519,671.08
  6. Step 6: Final answer
    x = 678,555.49

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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.