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Finding the Fourth Proportional to 511,982.70, 766,994.85 and 275,246.70

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Solution

The fourth proportional to 511,982.70, 766,994.85 and 275,246.70 is: 412,343.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,982.70 : 766,994.85 = 275,246.70 : x
  2. Step 2: Convert to fraction form
    511,982.70/766,994.85 = 275,246.70/x
  3. Step 3: Cross multiply
    511,982.70x = 766,994.85 × 275,246.70
  4. Step 4: Simplify right side
    511,982.70x = 211,112,801,379.50
  5. Step 5: Solve for x
    x = 211,112,801,379.50/511,982.70
  6. Step 6: Final answer
    x = 412,343.62

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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.