Home / 1,298,426.70-1,947,640.05-1,279,764.30

Finding the Fourth Proportional to 1,298,426.70, 1,947,640.05 and 1,279,764.30

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Solution

The fourth proportional to 1,298,426.70, 1,947,640.05 and 1,279,764.30 is: 1,919,646.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,426.70 : 1,947,640.05 = 1,279,764.30 : x
  2. Step 2: Convert to fraction form
    1,298,426.70/1,947,640.05 = 1,279,764.30/x
  3. Step 3: Cross multiply
    1,298,426.70x = 1,947,640.05 × 1,279,764.30
  4. Step 4: Simplify right side
    1,298,426.70x = 2,492,520,205,240.22
  5. Step 5: Solve for x
    x = 2,492,520,205,240.22/1,298,426.70
  6. Step 6: Final answer
    x = 1,919,646.45

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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.