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Finding the Fourth Proportional to 566,074.88, 781,183.33 and 311,420.60

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Solution

The fourth proportional to 566,074.88, 781,183.33 and 311,420.60 is: 429,760.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,074.88 : 781,183.33 = 311,420.60 : x
  2. Step 2: Convert to fraction form
    566,074.88/781,183.33 = 311,420.60/x
  3. Step 3: Cross multiply
    566,074.88x = 781,183.33 × 311,420.60
  4. Step 4: Simplify right side
    566,074.88x = 243,276,581,338.60
  5. Step 5: Solve for x
    x = 243,276,581,338.60/566,074.88
  6. Step 6: Final answer
    x = 429,760.43

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Double scale
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Similar ratio
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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.