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Finding the Fourth Proportional to 460,499.85, 690,749.78 and 347,568.64

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Solution

The fourth proportional to 460,499.85, 690,749.78 and 347,568.64 is: 521,352.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,499.85 : 690,749.78 = 347,568.64 : x
  2. Step 2: Convert to fraction form
    460,499.85/690,749.78 = 347,568.64/x
  3. Step 3: Cross multiply
    460,499.85x = 690,749.78 × 347,568.64
  4. Step 4: Simplify right side
    460,499.85x = 240,082,958,150.18
  5. Step 5: Solve for x
    x = 240,082,958,150.18/460,499.85
  6. Step 6: Final answer
    x = 521,352.96

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.