Home / 1,312,737.20-1,969,105.80-426,273.20

Finding the Fourth Proportional to 1,312,737.20, 1,969,105.80 and 426,273.20

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Solution

The fourth proportional to 1,312,737.20, 1,969,105.80 and 426,273.20 is: 639,409.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,737.20 : 1,969,105.80 = 426,273.20 : x
  2. Step 2: Convert to fraction form
    1,312,737.20/1,969,105.80 = 426,273.20/x
  3. Step 3: Cross multiply
    1,312,737.20x = 1,969,105.80 × 426,273.20
  4. Step 4: Simplify right side
    1,312,737.20x = 839,377,030,504.56
  5. Step 5: Solve for x
    x = 839,377,030,504.56/1,312,737.20
  6. Step 6: Final answer
    x = 639,409.80

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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.