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Finding the Fourth Proportional to 1,295,249.60, 1,942,874.40 and 1,286,955.20

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Solution

The fourth proportional to 1,295,249.60, 1,942,874.40 and 1,286,955.20 is: 1,930,432.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,249.60 : 1,942,874.40 = 1,286,955.20 : x
  2. Step 2: Convert to fraction form
    1,295,249.60/1,942,874.40 = 1,286,955.20/x
  3. Step 3: Cross multiply
    1,295,249.60x = 1,942,874.40 × 1,286,955.20
  4. Step 4: Simplify right side
    1,295,249.60x = 2,500,392,312,026.88
  5. Step 5: Solve for x
    x = 2,500,392,312,026.88/1,295,249.60
  6. Step 6: Final answer
    x = 1,930,432.80

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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.