Home / 1,221,424.80-1,831,262.40-511,087.20

Finding the Fourth Proportional to 1,221,424.80, 1,831,262.40 and 511,087.20

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Solution

The fourth proportional to 1,221,424.80, 1,831,262.40 and 511,087.20 is: 766,264.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,424.80 : 1,831,262.40 = 511,087.20 : x
  2. Step 2: Convert to fraction form
    1,221,424.80/1,831,262.40 = 511,087.20/x
  3. Step 3: Cross multiply
    1,221,424.80x = 1,831,262.40 × 511,087.20
  4. Step 4: Simplify right side
    1,221,424.80x = 935,934,772,481.28
  5. Step 5: Solve for x
    x = 935,934,772,481.28/1,221,424.80
  6. Step 6: Final answer
    x = 766,264.75

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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.