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Finding the Fourth Proportional to 684,980.21, 945,249.41 and 379,069.48

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Solution

The fourth proportional to 684,980.21, 945,249.41 and 379,069.48 is: 523,103.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,980.21 : 945,249.41 = 379,069.48 : x
  2. Step 2: Convert to fraction form
    684,980.21/945,249.41 = 379,069.48/x
  3. Step 3: Cross multiply
    684,980.21x = 945,249.41 × 379,069.48
  4. Step 4: Simplify right side
    684,980.21x = 358,315,204,448.24
  5. Step 5: Solve for x
    x = 358,315,204,448.24/684,980.21
  6. Step 6: Final answer
    x = 523,103.00

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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.