Home / 812,204.49-1,216,975.10-575,121.54

Finding the Fourth Proportional to 812,204.49, 1,216,975.10 and 575,121.54

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Solution

The fourth proportional to 812,204.49, 1,216,975.10 and 575,121.54 is: 861,739.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,204.49 : 1,216,975.10 = 575,121.54 : x
  2. Step 2: Convert to fraction form
    812,204.49/1,216,975.10 = 575,121.54/x
  3. Step 3: Cross multiply
    812,204.49x = 1,216,975.10 × 575,121.54
  4. Step 4: Simplify right side
    812,204.49x = 699,908,590,778.05
  5. Step 5: Solve for x
    x = 699,908,590,778.05/812,204.49
  6. Step 6: Final answer
    x = 861,739.38

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.