Home / 2,129,370.12-2,938,788.54-1,211,822.40

Finding the Fourth Proportional to 2,129,370.12, 2,938,788.54 and 1,211,822.40

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Solution

The fourth proportional to 2,129,370.12, 2,938,788.54 and 1,211,822.40 is: 1,672,461.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129,370.12 : 2,938,788.54 = 1,211,822.40 : x
  2. Step 2: Convert to fraction form
    2,129,370.12/2,938,788.54 = 1,211,822.40/x
  3. Step 3: Cross multiply
    2,129,370.12x = 2,938,788.54 × 1,211,822.40
  4. Step 4: Simplify right side
    2,129,370.12x = 3,561,289,781,635.30
  5. Step 5: Solve for x
    x = 3,561,289,781,635.30/2,129,370.12
  6. Step 6: Final answer
    x = 1,672,461.61

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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.