Home / 2,129,396.11-2,938,456.20-1,211,606.66

Finding the Fourth Proportional to 2,129,396.11, 2,938,456.20 and 1,211,606.66

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Solution

The fourth proportional to 2,129,396.11, 2,938,456.20 and 1,211,606.66 is: 1,671,954.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129,396.11 : 2,938,456.20 = 1,211,606.66 : x
  2. Step 2: Convert to fraction form
    2,129,396.11/2,938,456.20 = 1,211,606.66/x
  3. Step 3: Cross multiply
    2,129,396.11x = 2,938,456.20 × 1,211,606.66
  4. Step 4: Simplify right side
    2,129,396.11x = 3,560,253,102,038.29
  5. Step 5: Solve for x
    x = 3,560,253,102,038.29/2,129,396.11
  6. Step 6: Final answer
    x = 1,671,954.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.