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Finding the Fourth Proportional to 683,481.12, 943,218.48 and 381,674.88

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Solution

The fourth proportional to 683,481.12, 943,218.48 and 381,674.88 is: 526,719.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,481.12 : 943,218.48 = 381,674.88 : x
  2. Step 2: Convert to fraction form
    683,481.12/943,218.48 = 381,674.88/x
  3. Step 3: Cross multiply
    683,481.12x = 943,218.48 × 381,674.88
  4. Step 4: Simplify right side
    683,481.12x = 360,002,800,167.78
  5. Step 5: Solve for x
    x = 360,002,800,167.78/683,481.12
  6. Step 6: Final answer
    x = 526,719.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.