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Finding the Fourth Proportional to 627,246.28, 865,537.41 and 355,259.89

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Solution

The fourth proportional to 627,246.28, 865,537.41 and 355,259.89 is: 490,223.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,246.28 : 865,537.41 = 355,259.89 : x
  2. Step 2: Convert to fraction form
    627,246.28/865,537.41 = 355,259.89/x
  3. Step 3: Cross multiply
    627,246.28x = 865,537.41 × 355,259.89
  4. Step 4: Simplify right side
    627,246.28x = 307,490,725,067.49
  5. Step 5: Solve for x
    x = 307,490,725,067.49/627,246.28
  6. Step 6: Final answer
    x = 490,223.27

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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.