Home / 812,866.83-1,121,741.53-450,289.57

Finding the Fourth Proportional to 812,866.83, 1,121,741.53 and 450,289.57

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Solution

The fourth proportional to 812,866.83, 1,121,741.53 and 450,289.57 is: 621,391.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,866.83 : 1,121,741.53 = 450,289.57 : x
  2. Step 2: Convert to fraction form
    812,866.83/1,121,741.53 = 450,289.57/x
  3. Step 3: Cross multiply
    812,866.83x = 1,121,741.53 × 450,289.57
  4. Step 4: Simplify right side
    812,866.83x = 505,108,511,194.84
  5. Step 5: Solve for x
    x = 505,108,511,194.84/812,866.83
  6. Step 6: Final answer
    x = 621,391.47

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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.