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Finding the Fourth Proportional to 627,228.55, 865,649.60 and 372,580.75

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Solution

The fourth proportional to 627,228.55, 865,649.60 and 372,580.75 is: 514,205.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,228.55 : 865,649.60 = 372,580.75 : x
  2. Step 2: Convert to fraction form
    627,228.55/865,649.60 = 372,580.75/x
  3. Step 3: Cross multiply
    627,228.55x = 865,649.60 × 372,580.75
  4. Step 4: Simplify right side
    627,228.55x = 322,524,377,205.20
  5. Step 5: Solve for x
    x = 322,524,377,205.20/627,228.55
  6. Step 6: Final answer
    x = 514,205.51

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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.