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Finding the Fourth Proportional to 526,361.80, 789,024.30 and 260,163.40

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Solution

The fourth proportional to 526,361.80, 789,024.30 and 260,163.40 is: 389,988.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,361.80 : 789,024.30 = 260,163.40 : x
  2. Step 2: Convert to fraction form
    526,361.80/789,024.30 = 260,163.40/x
  3. Step 3: Cross multiply
    526,361.80x = 789,024.30 × 260,163.40
  4. Step 4: Simplify right side
    526,361.80x = 205,275,244,570.62
  5. Step 5: Solve for x
    x = 205,275,244,570.62/526,361.80
  6. Step 6: Final answer
    x = 389,988.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.