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Finding the Fourth Proportional to 8,179,738.40, 12,269,492.40 and 3,692,007.20

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Solution

The fourth proportional to 8,179,738.40, 12,269,492.40 and 3,692,007.20 is: 5,537,958.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,179,738.40 : 12,269,492.40 = 3,692,007.20 : x
  2. Step 2: Convert to fraction form
    8,179,738.40/12,269,492.40 = 3,692,007.20/x
  3. Step 3: Cross multiply
    8,179,738.40x = 12,269,492.40 × 3,692,007.20
  4. Step 4: Simplify right side
    8,179,738.40x = 45,299,054,281,145.28
  5. Step 5: Solve for x
    x = 45,299,054,281,145.28/8,179,738.40
  6. Step 6: Final answer
    x = 5,537,958.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.