Home / 1,328,259.85-1,993,451.38-688,745.81

Finding the Fourth Proportional to 1,328,259.85, 1,993,451.38 and 688,745.81

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Solution

The fourth proportional to 1,328,259.85, 1,993,451.38 and 688,745.81 is: 1,033,669.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,259.85 : 1,993,451.38 = 688,745.81 : x
  2. Step 2: Convert to fraction form
    1,328,259.85/1,993,451.38 = 688,745.81/x
  3. Step 3: Cross multiply
    1,328,259.85x = 1,993,451.38 × 688,745.81
  4. Step 4: Simplify right side
    1,328,259.85x = 1,372,981,288,675.48
  5. Step 5: Solve for x
    x = 1,372,981,288,675.48/1,328,259.85
  6. Step 6: Final answer
    x = 1,033,669.20

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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.