Home / 1,288,474.80-1,932,712.20-1,214,991.60

Finding the Fourth Proportional to 1,288,474.80, 1,932,712.20 and 1,214,991.60

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Solution

The fourth proportional to 1,288,474.80, 1,932,712.20 and 1,214,991.60 is: 1,822,487.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,474.80 : 1,932,712.20 = 1,214,991.60 : x
  2. Step 2: Convert to fraction form
    1,288,474.80/1,932,712.20 = 1,214,991.60/x
  3. Step 3: Cross multiply
    1,288,474.80x = 1,932,712.20 × 1,214,991.60
  4. Step 4: Simplify right side
    1,288,474.80x = 2,348,229,088,217.52
  5. Step 5: Solve for x
    x = 2,348,229,088,217.52/1,288,474.80
  6. Step 6: Final answer
    x = 1,822,487.40

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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.