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Finding the Fourth Proportional to 667,009.02, 920,472.25 and 361,085.18

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Solution

The fourth proportional to 667,009.02, 920,472.25 and 361,085.18 is: 498,297.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,009.02 : 920,472.25 = 361,085.18 : x
  2. Step 2: Convert to fraction form
    667,009.02/920,472.25 = 361,085.18/x
  3. Step 3: Cross multiply
    667,009.02x = 920,472.25 × 361,085.18
  4. Step 4: Simplify right side
    667,009.02x = 332,368,888,076.26
  5. Step 5: Solve for x
    x = 332,368,888,076.26/667,009.02
  6. Step 6: Final answer
    x = 498,297.44

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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.