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Finding the Fourth Proportional to 655,859.91, 984,350.63 and 256,780.94

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Solution

The fourth proportional to 655,859.91, 984,350.63 and 256,780.94 is: 385,390.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,859.91 : 984,350.63 = 256,780.94 : x
  2. Step 2: Convert to fraction form
    655,859.91/984,350.63 = 256,780.94/x
  3. Step 3: Cross multiply
    655,859.91x = 984,350.63 × 256,780.94
  4. Step 4: Simplify right side
    655,859.91x = 252,762,473,855.33
  5. Step 5: Solve for x
    x = 252,762,473,855.33/655,859.91
  6. Step 6: Final answer
    x = 385,390.95

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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.