Home / 1,319,738.60-1,979,672.70-689,882.60

Finding the Fourth Proportional to 1,319,738.60, 1,979,672.70 and 689,882.60

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Solution

The fourth proportional to 1,319,738.60, 1,979,672.70 and 689,882.60 is: 1,034,857.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,738.60 : 1,979,672.70 = 689,882.60 : x
  2. Step 2: Convert to fraction form
    1,319,738.60/1,979,672.70 = 689,882.60/x
  3. Step 3: Cross multiply
    1,319,738.60x = 1,979,672.70 × 689,882.60
  4. Step 4: Simplify right side
    1,319,738.60x = 1,365,741,749,425.02
  5. Step 5: Solve for x
    x = 1,365,741,749,425.02/1,319,738.60
  6. Step 6: Final answer
    x = 1,034,857.77

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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.