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Finding the Fourth Proportional to 667,004.34, 920,465.02 and 361,079.22

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Solution

The fourth proportional to 667,004.34, 920,465.02 and 361,079.22 is: 498,288.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,004.34 : 920,465.02 = 361,079.22 : x
  2. Step 2: Convert to fraction form
    667,004.34/920,465.02 = 361,079.22/x
  3. Step 3: Cross multiply
    667,004.34x = 920,465.02 × 361,079.22
  4. Step 4: Simplify right side
    667,004.34x = 332,360,789,653.49
  5. Step 5: Solve for x
    x = 332,360,789,653.49/667,004.34
  6. Step 6: Final answer
    x = 498,288.80

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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.