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Finding the Fourth Proportional to 634,912.46, 876,218.57 and 419,679.26

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Solution

The fourth proportional to 634,912.46, 876,218.57 and 419,679.26 is: 579,183.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,912.46 : 876,218.57 = 419,679.26 : x
  2. Step 2: Convert to fraction form
    634,912.46/876,218.57 = 419,679.26/x
  3. Step 3: Cross multiply
    634,912.46x = 876,218.57 × 419,679.26
  4. Step 4: Simplify right side
    634,912.46x = 367,730,754,576.37
  5. Step 5: Solve for x
    x = 367,730,754,576.37/634,912.46
  6. Step 6: Final answer
    x = 579,183.40

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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.