Home / 785,102.40-1,179,403.20-753,220.80

Finding the Fourth Proportional to 785,102.40, 1,179,403.20 and 753,220.80

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Solution

The fourth proportional to 785,102.40, 1,179,403.20 and 753,220.80 is: 1,131,509.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,102.40 : 1,179,403.20 = 753,220.80 : x
  2. Step 2: Convert to fraction form
    785,102.40/1,179,403.20 = 753,220.80/x
  3. Step 3: Cross multiply
    785,102.40x = 1,179,403.20 × 753,220.80
  4. Step 4: Simplify right side
    785,102.40x = 888,351,021,826.56
  5. Step 5: Solve for x
    x = 888,351,021,826.56/785,102.40
  6. Step 6: Final answer
    x = 1,131,509.75

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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.