Home / 1,276,245.12-1,914,298.56-389,712

Finding the Fourth Proportional to 1,276,245.12, 1,914,298.56 and 389,712

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Solution

The fourth proportional to 1,276,245.12, 1,914,298.56 and 389,712 is: 584,546.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,245.12 : 1,914,298.56 = 389,712 : x
  2. Step 2: Convert to fraction form
    1,276,245.12/1,914,298.56 = 389,712/x
  3. Step 3: Cross multiply
    1,276,245.12x = 1,914,298.56 × 389,712
  4. Step 4: Simplify right side
    1,276,245.12x = 746,025,120,414.72
  5. Step 5: Solve for x
    x = 746,025,120,414.72/1,276,245.12
  6. Step 6: Final answer
    x = 584,546.89

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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.