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Finding the Fourth Proportional to 511,870.90, 767,806.20 and 274,887.58

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Solution

The fourth proportional to 511,870.90, 767,806.20 and 274,887.58 is: 412,331.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,870.90 : 767,806.20 = 274,887.58 : x
  2. Step 2: Convert to fraction form
    511,870.90/767,806.20 = 274,887.58/x
  3. Step 3: Cross multiply
    511,870.90x = 767,806.20 × 274,887.58
  4. Step 4: Simplify right side
    511,870.90x = 211,060,388,227.00
  5. Step 5: Solve for x
    x = 211,060,388,227.00/511,870.90
  6. Step 6: Final answer
    x = 412,331.29

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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.