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Finding the Fourth Proportional to 3,981,491.76, 5,972,259.50 and 989,675.76

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Solution

The fourth proportional to 3,981,491.76, 5,972,259.50 and 989,675.76 is: 1,484,519.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981,491.76 : 5,972,259.50 = 989,675.76 : x
  2. Step 2: Convert to fraction form
    3,981,491.76/5,972,259.50 = 989,675.76/x
  3. Step 3: Cross multiply
    3,981,491.76x = 5,972,259.50 × 989,675.76
  4. Step 4: Simplify right side
    3,981,491.76x = 5,910,600,459,579.72
  5. Step 5: Solve for x
    x = 5,910,600,459,579.72/3,981,491.76
  6. Step 6: Final answer
    x = 1,484,519.07

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1.5x scale

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.