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Finding the Fourth Proportional to 511,976.70, 766,215.45 and 448,991.10

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Solution

The fourth proportional to 511,976.70, 766,215.45 and 448,991.10 is: 671,952.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,976.70 : 766,215.45 = 448,991.10 : x
  2. Step 2: Convert to fraction form
    511,976.70/766,215.45 = 448,991.10/x
  3. Step 3: Cross multiply
    511,976.70x = 766,215.45 × 448,991.10
  4. Step 4: Simplify right side
    511,976.70x = 344,023,917,732.50
  5. Step 5: Solve for x
    x = 344,023,917,732.50/511,976.70
  6. Step 6: Final answer
    x = 671,952.29

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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.