Home / 812,864.57-1,121,738.05-450,280.49

Finding the Fourth Proportional to 812,864.57, 1,121,738.05 and 450,280.49

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Solution

The fourth proportional to 812,864.57, 1,121,738.05 and 450,280.49 is: 621,378.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,864.57 : 1,121,738.05 = 450,280.49 : x
  2. Step 2: Convert to fraction form
    812,864.57/1,121,738.05 = 450,280.49/x
  3. Step 3: Cross multiply
    812,864.57x = 1,121,738.05 × 450,280.49
  4. Step 4: Simplify right side
    812,864.57x = 505,096,753,759.81
  5. Step 5: Solve for x
    x = 505,096,753,759.81/812,864.57
  6. Step 6: Final answer
    x = 621,378.73

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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.