Home / 738,679.55-1,108,517.88-289,344.68

Finding the Fourth Proportional to 738,679.55, 1,108,517.88 and 289,344.68

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Solution

The fourth proportional to 738,679.55, 1,108,517.88 and 289,344.68 is: 434,212.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,679.55 : 1,108,517.88 = 289,344.68 : x
  2. Step 2: Convert to fraction form
    738,679.55/1,108,517.88 = 289,344.68/x
  3. Step 3: Cross multiply
    738,679.55x = 1,108,517.88 × 289,344.68
  4. Step 4: Simplify right side
    738,679.55x = 320,743,753,266.20
  5. Step 5: Solve for x
    x = 320,743,753,266.20/738,679.55
  6. Step 6: Final answer
    x = 434,212.31

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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.