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Finding the Fourth Proportional to 568,456.28, 784,481.54 and 310,344.10

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Solution

The fourth proportional to 568,456.28, 784,481.54 and 310,344.10 is: 428,281.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,456.28 : 784,481.54 = 310,344.10 : x
  2. Step 2: Convert to fraction form
    568,456.28/784,481.54 = 310,344.10/x
  3. Step 3: Cross multiply
    568,456.28x = 784,481.54 × 310,344.10
  4. Step 4: Simplify right side
    568,456.28x = 243,459,213,984.99
  5. Step 5: Solve for x
    x = 243,459,213,984.99/568,456.28
  6. Step 6: Final answer
    x = 428,281.34

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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.