Home / 452,578.52-678,867.75-115,619.90

Finding the Fourth Proportional to 452,578.52, 678,867.75 and 115,619.90

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Solution

The fourth proportional to 452,578.52, 678,867.75 and 115,619.90 is: 173,429.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,578.52 : 678,867.75 = 115,619.90 : x
  2. Step 2: Convert to fraction form
    452,578.52/678,867.75 = 115,619.90/x
  3. Step 3: Cross multiply
    452,578.52x = 678,867.75 × 115,619.90
  4. Step 4: Simplify right side
    452,578.52x = 78,490,617,973.89
  5. Step 5: Solve for x
    x = 78,490,617,973.89/452,578.52
  6. Step 6: Final answer
    x = 173,429.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.