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Finding the Fourth Proportional to 636,322.56, 878,102.55 and 349,840.41

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Solution

The fourth proportional to 636,322.56, 878,102.55 and 349,840.41 is: 482,767.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,322.56 : 878,102.55 = 349,840.41 : x
  2. Step 2: Convert to fraction form
    636,322.56/878,102.55 = 349,840.41/x
  3. Step 3: Cross multiply
    636,322.56x = 878,102.55 × 349,840.41
  4. Step 4: Simplify right side
    636,322.56x = 307,195,756,114.05
  5. Step 5: Solve for x
    x = 307,195,756,114.05/636,322.56
  6. Step 6: Final answer
    x = 482,767.35

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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.