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Finding the Fourth Proportional to 667,116.37, 920,619.37 and 361,192.71

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Solution

The fourth proportional to 667,116.37, 920,619.37 and 361,192.71 is: 498,445.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,116.37 : 920,619.37 = 361,192.71 : x
  2. Step 2: Convert to fraction form
    667,116.37/920,619.37 = 361,192.71/x
  3. Step 3: Cross multiply
    667,116.37x = 920,619.37 × 361,192.71
  4. Step 4: Simplify right side
    667,116.37x = 332,521,003,322.83
  5. Step 5: Solve for x
    x = 332,521,003,322.83/667,116.37
  6. Step 6: Final answer
    x = 498,445.28

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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.