Home / 1,221,338.80-1,831,133.40-511,001.20

Finding the Fourth Proportional to 1,221,338.80, 1,831,133.40 and 511,001.20

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Solution

The fourth proportional to 1,221,338.80, 1,831,133.40 and 511,001.20 is: 766,135.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,338.80 : 1,831,133.40 = 511,001.20 : x
  2. Step 2: Convert to fraction form
    1,221,338.80/1,831,133.40 = 511,001.20/x
  3. Step 3: Cross multiply
    1,221,338.80x = 1,831,133.40 × 511,001.20
  4. Step 4: Simplify right side
    1,221,338.80x = 935,711,364,760.08
  5. Step 5: Solve for x
    x = 935,711,364,760.08/1,221,338.80
  6. Step 6: Final answer
    x = 766,135.79

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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.