Home / 1,298,445.20-1,947,667.80-1,279,782.80

Finding the Fourth Proportional to 1,298,445.20, 1,947,667.80 and 1,279,782.80

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Solution

The fourth proportional to 1,298,445.20, 1,947,667.80 and 1,279,782.80 is: 1,919,674.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,445.20 : 1,947,667.80 = 1,279,782.80 : x
  2. Step 2: Convert to fraction form
    1,298,445.20/1,947,667.80 = 1,279,782.80/x
  3. Step 3: Cross multiply
    1,298,445.20x = 1,947,667.80 × 1,279,782.80
  4. Step 4: Simplify right side
    1,298,445.20x = 2,492,591,750,553.84
  5. Step 5: Solve for x
    x = 2,492,591,750,553.84/1,298,445.20
  6. Step 6: Final answer
    x = 1,919,674.20

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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.