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Finding the Fourth Proportional to 891,863.72, 1,230,775.25 and 483,965.64

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Solution

The fourth proportional to 891,863.72, 1,230,775.25 and 483,965.64 is: 667,874.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,863.72 : 1,230,775.25 = 483,965.64 : x
  2. Step 2: Convert to fraction form
    891,863.72/1,230,775.25 = 483,965.64/x
  3. Step 3: Cross multiply
    891,863.72x = 1,230,775.25 × 483,965.64
  4. Step 4: Simplify right side
    891,863.72x = 595,652,934,752.98
  5. Step 5: Solve for x
    x = 595,652,934,752.98/891,863.72
  6. Step 6: Final answer
    x = 667,874.39

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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.