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Finding the Fourth Proportional to 667,401.57, 921,009.44 and 361,470.90

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Solution

The fourth proportional to 667,401.57, 921,009.44 and 361,470.90 is: 498,827.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,401.57 : 921,009.44 = 361,470.90 : x
  2. Step 2: Convert to fraction form
    667,401.57/921,009.44 = 361,470.90/x
  3. Step 3: Cross multiply
    667,401.57x = 921,009.44 × 361,470.90
  4. Step 4: Simplify right side
    667,401.57x = 332,918,109,377.94
  5. Step 5: Solve for x
    x = 332,918,109,377.94/667,401.57
  6. Step 6: Final answer
    x = 498,827.28

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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.