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Finding the Fourth Proportional to 618,280.33, 926,213.08 and 426,120.38

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Solution

The fourth proportional to 618,280.33, 926,213.08 and 426,120.38 is: 638,348.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,280.33 : 926,213.08 = 426,120.38 : x
  2. Step 2: Convert to fraction form
    618,280.33/926,213.08 = 426,120.38/x
  3. Step 3: Cross multiply
    618,280.33x = 926,213.08 × 426,120.38
  4. Step 4: Simplify right side
    618,280.33x = 394,678,269,610.57
  5. Step 5: Solve for x
    x = 394,678,269,610.57/618,280.33
  6. Step 6: Final answer
    x = 638,348.42

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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.