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Finding the Fourth Proportional to 511,990.20, 767,006.10 and 275,254.20

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Solution

The fourth proportional to 511,990.20, 767,006.10 and 275,254.20 is: 412,354.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,990.20 : 767,006.10 = 275,254.20 : x
  2. Step 2: Convert to fraction form
    511,990.20/767,006.10 = 275,254.20/x
  3. Step 3: Cross multiply
    511,990.20x = 767,006.10 × 275,254.20
  4. Step 4: Simplify right side
    511,990.20x = 211,121,650,450.62
  5. Step 5: Solve for x
    x = 211,121,650,450.62/511,990.20
  6. Step 6: Final answer
    x = 412,354.87

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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.