Home / 1,212,251.32-1,672,500.72-782,821.72

Finding the Fourth Proportional to 1,212,251.32, 1,672,500.72 and 782,821.72

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Solution

The fourth proportional to 1,212,251.32, 1,672,500.72 and 782,821.72 is: 1,080,031.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,251.32 : 1,672,500.72 = 782,821.72 : x
  2. Step 2: Convert to fraction form
    1,212,251.32/1,672,500.72 = 782,821.72/x
  3. Step 3: Cross multiply
    1,212,251.32x = 1,672,500.72 × 782,821.72
  4. Step 4: Simplify right side
    1,212,251.32x = 1,309,269,890,331.64
  5. Step 5: Solve for x
    x = 1,309,269,890,331.64/1,212,251.32
  6. Step 6: Final answer
    x = 1,080,031.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.