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Finding the Fourth Proportional to 628,827.76, 867,797.92 and 342,363.56

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Solution

The fourth proportional to 628,827.76, 867,797.92 and 342,363.56 is: 472,470.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,827.76 : 867,797.92 = 342,363.56 : x
  2. Step 2: Convert to fraction form
    628,827.76/867,797.92 = 342,363.56/x
  3. Step 3: Cross multiply
    628,827.76x = 867,797.92 × 342,363.56
  4. Step 4: Simplify right side
    628,827.76x = 297,102,385,251.80
  5. Step 5: Solve for x
    x = 297,102,385,251.80/628,827.76
  6. Step 6: Final answer
    x = 472,470.21

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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.