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Finding the Fourth Proportional to 1,073,983.81, 1,481,728.85 and 665,938.82

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Solution

The fourth proportional to 1,073,983.81, 1,481,728.85 and 665,938.82 is: 918,766.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,073,983.81 : 1,481,728.85 = 665,938.82 : x
  2. Step 2: Convert to fraction form
    1,073,983.81/1,481,728.85 = 665,938.82/x
  3. Step 3: Cross multiply
    1,073,983.81x = 1,481,728.85 × 665,938.82
  4. Step 4: Simplify right side
    1,073,983.81x = 986,740,756,466.13
  5. Step 5: Solve for x
    x = 986,740,756,466.13/1,073,983.81
  6. Step 6: Final answer
    x = 918,766.88

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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.