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Finding the Fourth Proportional to 831,868.26, 1,147,978.98 and 449,895.03

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Solution

The fourth proportional to 831,868.26, 1,147,978.98 and 449,895.03 is: 620,855.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,868.26 : 1,147,978.98 = 449,895.03 : x
  2. Step 2: Convert to fraction form
    831,868.26/1,147,978.98 = 449,895.03/x
  3. Step 3: Cross multiply
    831,868.26x = 1,147,978.98 × 449,895.03
  4. Step 4: Simplify right side
    831,868.26x = 516,470,037,646.47
  5. Step 5: Solve for x
    x = 516,470,037,646.47/831,868.26
  6. Step 6: Final answer
    x = 620,855.56

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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.