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Finding the Fourth Proportional to 667,004.84, 920,465.70 and 361,079.72

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Solution

The fourth proportional to 667,004.84, 920,465.70 and 361,079.72 is: 498,289.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,004.84 : 920,465.70 = 361,079.72 : x
  2. Step 2: Convert to fraction form
    667,004.84/920,465.70 = 361,079.72/x
  3. Step 3: Cross multiply
    667,004.84x = 920,465.70 × 361,079.72
  4. Step 4: Simplify right side
    667,004.84x = 332,361,497,225.60
  5. Step 5: Solve for x
    x = 332,361,497,225.60/667,004.84
  6. Step 6: Final answer
    x = 498,289.48

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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.