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Finding the Fourth Proportional to 891,863.31, 1,230,765.12 and 483,954.78

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Solution

The fourth proportional to 891,863.31, 1,230,765.12 and 483,954.78 is: 667,854.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,863.31 : 1,230,765.12 = 483,954.78 : x
  2. Step 2: Convert to fraction form
    891,863.31/1,230,765.12 = 483,954.78/x
  3. Step 3: Cross multiply
    891,863.31x = 1,230,765.12 × 483,954.78
  4. Step 4: Simplify right side
    891,863.31x = 595,634,662,881.27
  5. Step 5: Solve for x
    x = 595,634,662,881.27/891,863.31
  6. Step 6: Final answer
    x = 667,854.21

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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.