Home / 1,638,221.22-2,260,647.98-940,340.78

Finding the Fourth Proportional to 1,638,221.22, 2,260,647.98 and 940,340.78

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Solution

The fourth proportional to 1,638,221.22, 2,260,647.98 and 940,340.78 is: 1,297,614.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,221.22 : 2,260,647.98 = 940,340.78 : x
  2. Step 2: Convert to fraction form
    1,638,221.22/2,260,647.98 = 940,340.78/x
  3. Step 3: Cross multiply
    1,638,221.22x = 2,260,647.98 × 940,340.78
  4. Step 4: Simplify right side
    1,638,221.22x = 2,125,779,484,818.62
  5. Step 5: Solve for x
    x = 2,125,779,484,818.62/1,638,221.22
  6. Step 6: Final answer
    x = 1,297,614.42

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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.