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Finding the Fourth Proportional to 555,469.64, 766,562.14 and 340,728.12

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Solution

The fourth proportional to 555,469.64, 766,562.14 and 340,728.12 is: 470,213.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,469.64 : 766,562.14 = 340,728.12 : x
  2. Step 2: Convert to fraction form
    555,469.64/766,562.14 = 340,728.12/x
  3. Step 3: Cross multiply
    555,469.64x = 766,562.14 × 340,728.12
  4. Step 4: Simplify right side
    555,469.64x = 261,189,276,825.38
  5. Step 5: Solve for x
    x = 261,189,276,825.38/555,469.64
  6. Step 6: Final answer
    x = 470,213.42

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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.