Home / 2,129,429.20-2,938,573.72-1,211,638.44

Finding the Fourth Proportional to 2,129,429.20, 2,938,573.72 and 1,211,638.44

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Solution

The fourth proportional to 2,129,429.20, 2,938,573.72 and 1,211,638.44 is: 1,672,039.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129,429.20 : 2,938,573.72 = 1,211,638.44 : x
  2. Step 2: Convert to fraction form
    2,129,429.20/2,938,573.72 = 1,211,638.44/x
  3. Step 3: Cross multiply
    2,129,429.20x = 2,938,573.72 × 1,211,638.44
  4. Step 4: Simplify right side
    2,129,429.20x = 3,560,488,877,925.80
  5. Step 5: Solve for x
    x = 3,560,488,877,925.80/2,129,429.20
  6. Step 6: Final answer
    x = 1,672,039.10

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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.