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Finding the Fourth Proportional to 3,981,492.76, 5,972,261 and 989,676.76

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Solution

The fourth proportional to 3,981,492.76, 5,972,261 and 989,676.76 is: 1,484,520.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981,492.76 : 5,972,261 = 989,676.76 : x
  2. Step 2: Convert to fraction form
    3,981,492.76/5,972,261 = 989,676.76/x
  3. Step 3: Cross multiply
    3,981,492.76x = 5,972,261 × 989,676.76
  4. Step 4: Simplify right side
    3,981,492.76x = 5,910,607,916,354.36
  5. Step 5: Solve for x
    x = 5,910,607,916,354.36/3,981,492.76
  6. Step 6: Final answer
    x = 1,484,520.57

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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.