Home / 1,293,144.60-1,939,716.90-820,363.80

Finding the Fourth Proportional to 1,293,144.60, 1,939,716.90 and 820,363.80

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Solution

The fourth proportional to 1,293,144.60, 1,939,716.90 and 820,363.80 is: 1,230,545.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,144.60 : 1,939,716.90 = 820,363.80 : x
  2. Step 2: Convert to fraction form
    1,293,144.60/1,939,716.90 = 820,363.80/x
  3. Step 3: Cross multiply
    1,293,144.60x = 1,939,716.90 × 820,363.80
  4. Step 4: Simplify right side
    1,293,144.60x = 1,591,273,527,008.22
  5. Step 5: Solve for x
    x = 1,591,273,527,008.22/1,293,144.60
  6. Step 6: Final answer
    x = 1,230,545.70

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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.