Home / 579,414.40-869,121.60-342,635.20

Finding the Fourth Proportional to 579,414.40, 869,121.60 and 342,635.20

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Solution

The fourth proportional to 579,414.40, 869,121.60 and 342,635.20 is: 513,952.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,414.40 : 869,121.60 = 342,635.20 : x
  2. Step 2: Convert to fraction form
    579,414.40/869,121.60 = 342,635.20/x
  3. Step 3: Cross multiply
    579,414.40x = 869,121.60 × 342,635.20
  4. Step 4: Simplify right side
    579,414.40x = 297,791,653,240.32
  5. Step 5: Solve for x
    x = 297,791,653,240.32/579,414.40
  6. Step 6: Final answer
    x = 513,952.80

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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.