Home / 1,221,897.44-1,831,213.78-644,342.88

Finding the Fourth Proportional to 1,221,897.44, 1,831,213.78 and 644,342.88

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Solution

The fourth proportional to 1,221,897.44, 1,831,213.78 and 644,342.88 is: 965,653.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,897.44 : 1,831,213.78 = 644,342.88 : x
  2. Step 2: Convert to fraction form
    1,221,897.44/1,831,213.78 = 644,342.88/x
  3. Step 3: Cross multiply
    1,221,897.44x = 1,831,213.78 × 644,342.88
  4. Step 4: Simplify right side
    1,221,897.44x = 1,179,929,560,900.89
  5. Step 5: Solve for x
    x = 1,179,929,560,900.89/1,221,897.44
  6. Step 6: Final answer
    x = 965,653.52

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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.