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Finding the Fourth Proportional to 579,562.88, 869,550 and 259,689.60

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Solution

The fourth proportional to 579,562.88, 869,550 and 259,689.60 is: 389,626.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,562.88 : 869,550 = 259,689.60 : x
  2. Step 2: Convert to fraction form
    579,562.88/869,550 = 259,689.60/x
  3. Step 3: Cross multiply
    579,562.88x = 869,550 × 259,689.60
  4. Step 4: Simplify right side
    579,562.88x = 225,813,091,680
  5. Step 5: Solve for x
    x = 225,813,091,680/579,562.88
  6. Step 6: Final answer
    x = 389,626.56

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1.5x scale

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.