Home / 2,154,341.31-2,972,855.84-1,187,418.39

Finding the Fourth Proportional to 2,154,341.31, 2,972,855.84 and 1,187,418.39

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Solution

The fourth proportional to 2,154,341.31, 2,972,855.84 and 1,187,418.39 is: 1,638,562.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154,341.31 : 2,972,855.84 = 1,187,418.39 : x
  2. Step 2: Convert to fraction form
    2,154,341.31/2,972,855.84 = 1,187,418.39/x
  3. Step 3: Cross multiply
    2,154,341.31x = 2,972,855.84 × 1,187,418.39
  4. Step 4: Simplify right side
    2,154,341.31x = 3,530,023,689,297.81
  5. Step 5: Solve for x
    x = 3,530,023,689,297.81/2,154,341.31
  6. Step 6: Final answer
    x = 1,638,562.87

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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.