Home / 780,043.20-1,170,064.80-691,469.70

Finding the Fourth Proportional to 780,043.20, 1,170,064.80 and 691,469.70

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Solution

The fourth proportional to 780,043.20, 1,170,064.80 and 691,469.70 is: 1,037,204.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,043.20 : 1,170,064.80 = 691,469.70 : x
  2. Step 2: Convert to fraction form
    780,043.20/1,170,064.80 = 691,469.70/x
  3. Step 3: Cross multiply
    780,043.20x = 1,170,064.80 × 691,469.70
  4. Step 4: Simplify right side
    780,043.20x = 809,064,356,236.56
  5. Step 5: Solve for x
    x = 809,064,356,236.56/780,043.20
  6. Step 6: Final answer
    x = 1,037,204.55

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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.