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Finding the Fourth Proportional to 452,763.21, 678,619.89 and 426,519.21

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Solution

The fourth proportional to 452,763.21, 678,619.89 and 426,519.21 is: 639,284.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,763.21 : 678,619.89 = 426,519.21 : x
  2. Step 2: Convert to fraction form
    452,763.21/678,619.89 = 426,519.21/x
  3. Step 3: Cross multiply
    452,763.21x = 678,619.89 × 426,519.21
  4. Step 4: Simplify right side
    452,763.21x = 289,444,419,373.09
  5. Step 5: Solve for x
    x = 289,444,419,373.09/452,763.21
  6. Step 6: Final answer
    x = 639,284.32

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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.