Home / 768,189.40-1,151,633.42-318,629.68

Finding the Fourth Proportional to 768,189.40, 1,151,633.42 and 318,629.68

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Solution

The fourth proportional to 768,189.40, 1,151,633.42 and 318,629.68 is: 477,674.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,189.40 : 1,151,633.42 = 318,629.68 : x
  2. Step 2: Convert to fraction form
    768,189.40/1,151,633.42 = 318,629.68/x
  3. Step 3: Cross multiply
    768,189.40x = 1,151,633.42 × 318,629.68
  4. Step 4: Simplify right side
    768,189.40x = 366,944,588,091.91
  5. Step 5: Solve for x
    x = 366,944,588,091.91/768,189.40
  6. Step 6: Final answer
    x = 477,674.63

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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.