Home / 627,344.70-865,736.55-340,868.22

Finding the Fourth Proportional to 627,344.70, 865,736.55 and 340,868.22

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Solution

The fourth proportional to 627,344.70, 865,736.55 and 340,868.22 is: 470,398.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,344.70 : 865,736.55 = 340,868.22 : x
  2. Step 2: Convert to fraction form
    627,344.70/865,736.55 = 340,868.22/x
  3. Step 3: Cross multiply
    627,344.70x = 865,736.55 × 340,868.22
  4. Step 4: Simplify right side
    627,344.70x = 295,102,076,787.44
  5. Step 5: Solve for x
    x = 295,102,076,787.44/627,344.70
  6. Step 6: Final answer
    x = 470,398.61

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Double scale
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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.