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Finding the Fourth Proportional to 628,546.33, 866,790.92 and 422,280.74

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Solution

The fourth proportional to 628,546.33, 866,790.92 and 422,280.74 is: 582,342.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,546.33 : 866,790.92 = 422,280.74 : x
  2. Step 2: Convert to fraction form
    628,546.33/866,790.92 = 422,280.74/x
  3. Step 3: Cross multiply
    628,546.33x = 866,790.92 × 422,280.74
  4. Step 4: Simplify right side
    628,546.33x = 366,029,114,345.56
  5. Step 5: Solve for x
    x = 366,029,114,345.56/628,546.33
  6. Step 6: Final answer
    x = 582,342.30

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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.