Home / 766,338.24-1,147,451.64-428,416.49

Finding the Fourth Proportional to 766,338.24, 1,147,451.64 and 428,416.49

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Solution

The fourth proportional to 766,338.24, 1,147,451.64 and 428,416.49 is: 641,475.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,338.24 : 1,147,451.64 = 428,416.49 : x
  2. Step 2: Convert to fraction form
    766,338.24/1,147,451.64 = 428,416.49/x
  3. Step 3: Cross multiply
    766,338.24x = 1,147,451.64 × 428,416.49
  4. Step 4: Simplify right side
    766,338.24x = 491,587,208,930.38
  5. Step 5: Solve for x
    x = 491,587,208,930.38/766,338.24
  6. Step 6: Final answer
    x = 641,475.50

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1.5x scale

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.