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Finding the Fourth Proportional to 668,493.72, 1,003,377.36 and 415,007.16

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Solution

The fourth proportional to 668,493.72, 1,003,377.36 and 415,007.16 is: 622,906.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,493.72 : 1,003,377.36 = 415,007.16 : x
  2. Step 2: Convert to fraction form
    668,493.72/1,003,377.36 = 415,007.16/x
  3. Step 3: Cross multiply
    668,493.72x = 1,003,377.36 × 415,007.16
  4. Step 4: Simplify right side
    668,493.72x = 416,408,788,581.90
  5. Step 5: Solve for x
    x = 416,408,788,581.90/668,493.72
  6. Step 6: Final answer
    x = 622,906.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.