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Finding the Fourth Proportional to 494,065.74, 681,370.66 and 385,196.88

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Solution

The fourth proportional to 494,065.74, 681,370.66 and 385,196.88 is: 531,228.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,065.74 : 681,370.66 = 385,196.88 : x
  2. Step 2: Convert to fraction form
    494,065.74/681,370.66 = 385,196.88/x
  3. Step 3: Cross multiply
    494,065.74x = 681,370.66 × 385,196.88
  4. Step 4: Simplify right side
    494,065.74x = 262,461,852,355.54
  5. Step 5: Solve for x
    x = 262,461,852,355.54/494,065.74
  6. Step 6: Final answer
    x = 531,228.60

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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.