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Finding the Fourth Proportional to 610,422.80, 915,446.94 and 422,093.30

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Solution

The fourth proportional to 610,422.80, 915,446.94 and 422,093.30 is: 633,010.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,422.80 : 915,446.94 = 422,093.30 : x
  2. Step 2: Convert to fraction form
    610,422.80/915,446.94 = 422,093.30/x
  3. Step 3: Cross multiply
    610,422.80x = 915,446.94 × 422,093.30
  4. Step 4: Simplify right side
    610,422.80x = 386,404,019,879.50
  5. Step 5: Solve for x
    x = 386,404,019,879.50/610,422.80
  6. Step 6: Final answer
    x = 633,010.46

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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.