Home / 491,619.84-678,386.88-273,821.21

Finding the Fourth Proportional to 491,619.84, 678,386.88 and 273,821.21

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Solution

The fourth proportional to 491,619.84, 678,386.88 and 273,821.21 is: 377,846.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,619.84 : 678,386.88 = 273,821.21 : x
  2. Step 2: Convert to fraction form
    491,619.84/678,386.88 = 273,821.21/x
  3. Step 3: Cross multiply
    491,619.84x = 678,386.88 × 273,821.21
  4. Step 4: Simplify right side
    491,619.84x = 185,756,714,960.62
  5. Step 5: Solve for x
    x = 185,756,714,960.62/491,619.84
  6. Step 6: Final answer
    x = 377,846.25

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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.