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Finding the Fourth Proportional to 678,273.75, 936,021.42 and 423,772.56

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Solution

The fourth proportional to 678,273.75, 936,021.42 and 423,772.56 is: 584,808.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,273.75 : 936,021.42 = 423,772.56 : x
  2. Step 2: Convert to fraction form
    678,273.75/936,021.42 = 423,772.56/x
  3. Step 3: Cross multiply
    678,273.75x = 936,021.42 × 423,772.56
  4. Step 4: Simplify right side
    678,273.75x = 396,660,193,368.24
  5. Step 5: Solve for x
    x = 396,660,193,368.24/678,273.75
  6. Step 6: Final answer
    x = 584,808.41

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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.