Home / 627,246.78-865,538.10-355,260.39

Finding the Fourth Proportional to 627,246.78, 865,538.10 and 355,260.39

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Solution

The fourth proportional to 627,246.78, 865,538.10 and 355,260.39 is: 490,223.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,246.78 : 865,538.10 = 355,260.39 : x
  2. Step 2: Convert to fraction form
    627,246.78/865,538.10 = 355,260.39/x
  3. Step 3: Cross multiply
    627,246.78x = 865,538.10 × 355,260.39
  4. Step 4: Simplify right side
    627,246.78x = 307,491,402,965.86
  5. Step 5: Solve for x
    x = 307,491,402,965.86/627,246.78
  6. Step 6: Final answer
    x = 490,223.96

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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.