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Finding the Fourth Proportional to 5,642,754.48, 7,789,384.12 and 3,809,695.88

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Solution

The fourth proportional to 5,642,754.48, 7,789,384.12 and 3,809,695.88 is: 5,258,989.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,642,754.48 : 7,789,384.12 = 3,809,695.88 : x
  2. Step 2: Convert to fraction form
    5,642,754.48/7,789,384.12 = 3,809,695.88/x
  3. Step 3: Cross multiply
    5,642,754.48x = 7,789,384.12 × 3,809,695.88
  4. Step 4: Simplify right side
    5,642,754.48x = 29,675,184,589,701.43
  5. Step 5: Solve for x
    x = 29,675,184,589,701.43/5,642,754.48
  6. Step 6: Final answer
    x = 5,258,989.15

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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.