Home / 627,313.46-865,664.34-355,375.80

Finding the Fourth Proportional to 627,313.46, 865,664.34 and 355,375.80

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Solution

The fourth proportional to 627,313.46, 865,664.34 and 355,375.80 is: 490,402.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,313.46 : 865,664.34 = 355,375.80 : x
  2. Step 2: Convert to fraction form
    627,313.46/865,664.34 = 355,375.80/x
  3. Step 3: Cross multiply
    627,313.46x = 865,664.34 × 355,375.80
  4. Step 4: Simplify right side
    627,313.46x = 307,636,157,358.97
  5. Step 5: Solve for x
    x = 307,636,157,358.97/627,313.46
  6. Step 6: Final answer
    x = 490,402.61

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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.