Home / 1,298,452.70-1,947,679.05-820,155.80

Finding the Fourth Proportional to 1,298,452.70, 1,947,679.05 and 820,155.80

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Solution

The fourth proportional to 1,298,452.70, 1,947,679.05 and 820,155.80 is: 1,230,233.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,452.70 : 1,947,679.05 = 820,155.80 : x
  2. Step 2: Convert to fraction form
    1,298,452.70/1,947,679.05 = 820,155.80/x
  3. Step 3: Cross multiply
    1,298,452.70x = 1,947,679.05 × 820,155.80
  4. Step 4: Simplify right side
    1,298,452.70x = 1,597,400,269,395.99
  5. Step 5: Solve for x
    x = 1,597,400,269,395.99/1,298,452.70
  6. Step 6: Final answer
    x = 1,230,233.70

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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.