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Finding the Fourth Proportional to 667,071.74, 920,559.28 and 361,148.10

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Solution

The fourth proportional to 667,071.74, 920,559.28 and 361,148.10 is: 498,384.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,071.74 : 920,559.28 = 361,148.10 : x
  2. Step 2: Convert to fraction form
    667,071.74/920,559.28 = 361,148.10/x
  3. Step 3: Cross multiply
    667,071.74x = 920,559.28 × 361,148.10
  4. Step 4: Simplify right side
    667,071.74x = 332,458,234,006.50
  5. Step 5: Solve for x
    x = 332,458,234,006.50/667,071.74
  6. Step 6: Final answer
    x = 498,384.53

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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.