Home / 1,278,819.60-1,764,813.80-698,077.20

Finding the Fourth Proportional to 1,278,819.60, 1,764,813.80 and 698,077.20

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Solution

The fourth proportional to 1,278,819.60, 1,764,813.80 and 698,077.20 is: 963,369.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,819.60 : 1,764,813.80 = 698,077.20 : x
  2. Step 2: Convert to fraction form
    1,278,819.60/1,764,813.80 = 698,077.20/x
  3. Step 3: Cross multiply
    1,278,819.60x = 1,764,813.80 × 698,077.20
  4. Step 4: Simplify right side
    1,278,819.60x = 1,231,976,276,025.36
  5. Step 5: Solve for x
    x = 1,231,976,276,025.36/1,278,819.60
  6. Step 6: Final answer
    x = 963,369.87

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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.