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Finding the Fourth Proportional to 665,595.44, 918,508.20 and 363,791.60

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Solution

The fourth proportional to 665,595.44, 918,508.20 and 363,791.60 is: 502,025.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,595.44 : 918,508.20 = 363,791.60 : x
  2. Step 2: Convert to fraction form
    665,595.44/918,508.20 = 363,791.60/x
  3. Step 3: Cross multiply
    665,595.44x = 918,508.20 × 363,791.60
  4. Step 4: Simplify right side
    665,595.44x = 334,145,567,691.12
  5. Step 5: Solve for x
    x = 334,145,567,691.12/665,595.44
  6. Step 6: Final answer
    x = 502,025.03

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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.