Home / 427,825.60-641,738.40-295,115.20

Finding the Fourth Proportional to 427,825.60, 641,738.40 and 295,115.20

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Solution

The fourth proportional to 427,825.60, 641,738.40 and 295,115.20 is: 442,672.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,825.60 : 641,738.40 = 295,115.20 : x
  2. Step 2: Convert to fraction form
    427,825.60/641,738.40 = 295,115.20/x
  3. Step 3: Cross multiply
    427,825.60x = 641,738.40 × 295,115.20
  4. Step 4: Simplify right side
    427,825.60x = 189,386,756,263.68
  5. Step 5: Solve for x
    x = 189,386,756,263.68/427,825.60
  6. Step 6: Final answer
    x = 442,672.80

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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.