Home / 812,836.45-1,121,700.25-450,252.71

Finding the Fourth Proportional to 812,836.45, 1,121,700.25 and 450,252.71

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Solution

The fourth proportional to 812,836.45, 1,121,700.25 and 450,252.71 is: 621,340.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,836.45 : 1,121,700.25 = 450,252.71 : x
  2. Step 2: Convert to fraction form
    812,836.45/1,121,700.25 = 450,252.71/x
  3. Step 3: Cross multiply
    812,836.45x = 1,121,700.25 × 450,252.71
  4. Step 4: Simplify right side
    812,836.45x = 505,048,570,636.05
  5. Step 5: Solve for x
    x = 505,048,570,636.05/812,836.45
  6. Step 6: Final answer
    x = 621,340.95

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1.5x scale

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.