Home / 1,290,049.20-1,934,490.60-579,711.60

Finding the Fourth Proportional to 1,290,049.20, 1,934,490.60 and 579,711.60

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Solution

The fourth proportional to 1,290,049.20, 1,934,490.60 and 579,711.60 is: 869,305.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,049.20 : 1,934,490.60 = 579,711.60 : x
  2. Step 2: Convert to fraction form
    1,290,049.20/1,934,490.60 = 579,711.60/x
  3. Step 3: Cross multiply
    1,290,049.20x = 1,934,490.60 × 579,711.60
  4. Step 4: Simplify right side
    1,290,049.20x = 1,121,446,640,910.96
  5. Step 5: Solve for x
    x = 1,121,446,640,910.96/1,290,049.20
  6. Step 6: Final answer
    x = 869,305.33

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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.