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Finding the Fourth Proportional to 618,282.82, 926,216.84 and 426,122.88

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Solution

The fourth proportional to 618,282.82, 926,216.84 and 426,122.88 is: 638,352.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,282.82 : 926,216.84 = 426,122.88 : x
  2. Step 2: Convert to fraction form
    618,282.82/926,216.84 = 426,122.88/x
  3. Step 3: Cross multiply
    618,282.82x = 926,216.84 × 426,122.88
  4. Step 4: Simplify right side
    618,282.82x = 394,682,187,365.30
  5. Step 5: Solve for x
    x = 394,682,187,365.30/618,282.82
  6. Step 6: Final answer
    x = 638,352.18

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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.