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Finding the Fourth Proportional to 415,944.80, 622,750.80 and 404,280.80

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Solution

The fourth proportional to 415,944.80, 622,750.80 and 404,280.80 is: 605,287.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,944.80 : 622,750.80 = 404,280.80 : x
  2. Step 2: Convert to fraction form
    415,944.80/622,750.80 = 404,280.80/x
  3. Step 3: Cross multiply
    415,944.80x = 622,750.80 × 404,280.80
  4. Step 4: Simplify right side
    415,944.80x = 251,766,191,624.64
  5. Step 5: Solve for x
    x = 251,766,191,624.64/415,944.80
  6. Step 6: Final answer
    x = 605,287.51

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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.