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Finding the Fourth Proportional to 2,885,847.84, 3,978,981.90 and 2,335,141.80

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Solution

The fourth proportional to 2,885,847.84, 3,978,981.90 and 2,335,141.80 is: 3,219,673.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,885,847.84 : 3,978,981.90 = 2,335,141.80 : x
  2. Step 2: Convert to fraction form
    2,885,847.84/3,978,981.90 = 2,335,141.80/x
  3. Step 3: Cross multiply
    2,885,847.84x = 3,978,981.90 × 2,335,141.80
  4. Step 4: Simplify right side
    2,885,847.84x = 9,291,486,956,133.42
  5. Step 5: Solve for x
    x = 9,291,486,956,133.42/2,885,847.84
  6. Step 6: Final answer
    x = 3,219,673.20

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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.