Home / 3,129,279.84-4,318,256.88-1,921,822.56

Finding the Fourth Proportional to 3,129,279.84, 4,318,256.88 and 1,921,822.56

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Solution

The fourth proportional to 3,129,279.84, 4,318,256.88 and 1,921,822.56 is: 2,652,023.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129,279.84 : 4,318,256.88 = 1,921,822.56 : x
  2. Step 2: Convert to fraction form
    3,129,279.84/4,318,256.88 = 1,921,822.56/x
  3. Step 3: Cross multiply
    3,129,279.84x = 4,318,256.88 × 1,921,822.56
  4. Step 4: Simplify right side
    3,129,279.84x = 8,298,923,491,859.21
  5. Step 5: Solve for x
    x = 8,298,923,491,859.21/3,129,279.84
  6. Step 6: Final answer
    x = 2,652,023.44

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1.5x scale

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.