Home / 457,620.46-630,816.24-321,271.90

Finding the Fourth Proportional to 457,620.46, 630,816.24 and 321,271.90

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Solution

The fourth proportional to 457,620.46, 630,816.24 and 321,271.90 is: 442,863.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,620.46 : 630,816.24 = 321,271.90 : x
  2. Step 2: Convert to fraction form
    457,620.46/630,816.24 = 321,271.90/x
  3. Step 3: Cross multiply
    457,620.46x = 630,816.24 × 321,271.90
  4. Step 4: Simplify right side
    457,620.46x = 202,663,531,975.66
  5. Step 5: Solve for x
    x = 202,663,531,975.66/457,620.46
  6. Step 6: Final answer
    x = 442,863.79

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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.