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Finding the Fourth Proportional to 486,554.72, 665,610.29 and 484,505.40

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Solution

The fourth proportional to 486,554.72, 665,610.29 and 484,505.40 is: 662,806.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,554.72 : 665,610.29 = 484,505.40 : x
  2. Step 2: Convert to fraction form
    486,554.72/665,610.29 = 484,505.40/x
  3. Step 3: Cross multiply
    486,554.72x = 665,610.29 × 484,505.40
  4. Step 4: Simplify right side
    486,554.72x = 322,491,777,378.04
  5. Step 5: Solve for x
    x = 322,491,777,378.04/486,554.72
  6. Step 6: Final answer
    x = 662,806.81

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.