Home / 812,865.83-1,121,740.16-450,288.57

Finding the Fourth Proportional to 812,865.83, 1,121,740.16 and 450,288.57

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Solution

The fourth proportional to 812,865.83, 1,121,740.16 and 450,288.57 is: 621,390.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,865.83 : 1,121,740.16 = 450,288.57 : x
  2. Step 2: Convert to fraction form
    812,865.83/1,121,740.16 = 450,288.57/x
  3. Step 3: Cross multiply
    812,865.83x = 1,121,740.16 × 450,288.57
  4. Step 4: Simplify right side
    812,865.83x = 505,106,770,306.53
  5. Step 5: Solve for x
    x = 505,106,770,306.53/812,865.83
  6. Step 6: Final answer
    x = 621,390.09

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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.