Home / 451,589.22-678,442.50-426,054.78

Finding the Fourth Proportional to 451,589.22, 678,442.50 and 426,054.78

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Solution

The fourth proportional to 451,589.22, 678,442.50 and 426,054.78 is: 640,080.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,589.22 : 678,442.50 = 426,054.78 : x
  2. Step 2: Convert to fraction form
    451,589.22/678,442.50 = 426,054.78/x
  3. Step 3: Cross multiply
    451,589.22x = 678,442.50 × 426,054.78
  4. Step 4: Simplify right side
    451,589.22x = 289,053,670,080.15
  5. Step 5: Solve for x
    x = 289,053,670,080.15/451,589.22
  6. Step 6: Final answer
    x = 640,080.98

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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.