Home / 1,320,219.24-1,980,328.92-720,853.47

Finding the Fourth Proportional to 1,320,219.24, 1,980,328.92 and 720,853.47

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Solution

The fourth proportional to 1,320,219.24, 1,980,328.92 and 720,853.47 is: 1,081,280.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,219.24 : 1,980,328.92 = 720,853.47 : x
  2. Step 2: Convert to fraction form
    1,320,219.24/1,980,328.92 = 720,853.47/x
  3. Step 3: Cross multiply
    1,320,219.24x = 1,980,328.92 × 720,853.47
  4. Step 4: Simplify right side
    1,320,219.24x = 1,427,526,960,217.44
  5. Step 5: Solve for x
    x = 1,427,526,960,217.44/1,320,219.24
  6. Step 6: Final answer
    x = 1,081,280.23

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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.