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Finding the Fourth Proportional to 655,859.64, 984,350.22 and 256,780.66

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Solution

The fourth proportional to 655,859.64, 984,350.22 and 256,780.66 is: 385,390.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,859.64 : 984,350.22 = 256,780.66 : x
  2. Step 2: Convert to fraction form
    655,859.64/984,350.22 = 256,780.66/x
  3. Step 3: Cross multiply
    655,859.64x = 984,350.22 × 256,780.66
  4. Step 4: Simplify right side
    655,859.64x = 252,762,099,162.75
  5. Step 5: Solve for x
    x = 252,762,099,162.75/655,859.64
  6. Step 6: Final answer
    x = 385,390.54

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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.