Home / 812,791.02-1,121,639.76-450,213.69

Finding the Fourth Proportional to 812,791.02, 1,121,639.76 and 450,213.69

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Solution

The fourth proportional to 812,791.02, 1,121,639.76 and 450,213.69 is: 621,288.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,791.02 : 1,121,639.76 = 450,213.69 : x
  2. Step 2: Convert to fraction form
    812,791.02/1,121,639.76 = 450,213.69/x
  3. Step 3: Cross multiply
    812,791.02x = 1,121,639.76 × 450,213.69
  4. Step 4: Simplify right side
    812,791.02x = 504,977,575,200.31
  5. Step 5: Solve for x
    x = 504,977,575,200.31/812,791.02
  6. Step 6: Final answer
    x = 621,288.33

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Double scale
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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.