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Finding the Fourth Proportional to 627,249.28, 865,541.54 and 355,262.90

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Solution

The fourth proportional to 627,249.28, 865,541.54 and 355,262.90 is: 490,227.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,249.28 : 865,541.54 = 355,262.90 : x
  2. Step 2: Convert to fraction form
    627,249.28/865,541.54 = 355,262.90/x
  3. Step 3: Cross multiply
    627,249.28x = 865,541.54 × 355,262.90
  4. Step 4: Simplify right side
    627,249.28x = 307,494,797,570.87
  5. Step 5: Solve for x
    x = 307,494,797,570.87/627,249.28
  6. Step 6: Final answer
    x = 490,227.42

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1.5x scale

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.