Home / 628,815.43-867,765.05-342,335.44

Finding the Fourth Proportional to 628,815.43, 867,765.05 and 342,335.44

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Solution

The fourth proportional to 628,815.43, 867,765.05 and 342,335.44 is: 472,422.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,815.43 : 867,765.05 = 342,335.44 : x
  2. Step 2: Convert to fraction form
    628,815.43/867,765.05 = 342,335.44/x
  3. Step 3: Cross multiply
    628,815.43x = 867,765.05 × 342,335.44
  4. Step 4: Simplify right side
    628,815.43x = 297,066,728,496.70
  5. Step 5: Solve for x
    x = 297,066,728,496.70/628,815.43
  6. Step 6: Final answer
    x = 472,422.77

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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.