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Finding the Fourth Proportional to 667,052.24, 920,530.94 and 361,128.51

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Solution

The fourth proportional to 667,052.24, 920,530.94 and 361,128.51 is: 498,356.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,052.24 : 920,530.94 = 361,128.51 : x
  2. Step 2: Convert to fraction form
    667,052.24/920,530.94 = 361,128.51/x
  3. Step 3: Cross multiply
    667,052.24x = 920,530.94 × 361,128.51
  4. Step 4: Simplify right side
    667,052.24x = 332,429,964,965.46
  5. Step 5: Solve for x
    x = 332,429,964,965.46/667,052.24
  6. Step 6: Final answer
    x = 498,356.72

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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.