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Finding the Fourth Proportional to 3,981,681, 5,972,543.37 and 989,865

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Solution

The fourth proportional to 3,981,681, 5,972,543.37 and 989,865 is: 1,484,802.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981,681 : 5,972,543.37 = 989,865 : x
  2. Step 2: Convert to fraction form
    3,981,681/5,972,543.37 = 989,865/x
  3. Step 3: Cross multiply
    3,981,681x = 5,972,543.37 × 989,865
  4. Step 4: Simplify right side
    3,981,681x = 5,912,011,642,945.05
  5. Step 5: Solve for x
    x = 5,912,011,642,945.05/3,981,681
  6. Step 6: Final answer
    x = 1,484,802.94

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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.