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Finding the Fourth Proportional to 627,263.75, 865,607.12 and 369,155.88

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Solution

The fourth proportional to 627,263.75, 865,607.12 and 369,155.88 is: 509,425.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,263.75 : 865,607.12 = 369,155.88 : x
  2. Step 2: Convert to fraction form
    627,263.75/865,607.12 = 369,155.88/x
  3. Step 3: Cross multiply
    627,263.75x = 865,607.12 × 369,155.88
  4. Step 4: Simplify right side
    627,263.75x = 319,543,962,167.44
  5. Step 5: Solve for x
    x = 319,543,962,167.44/627,263.75
  6. Step 6: Final answer
    x = 509,425.20

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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.