Home / 812,117.54-1,217,755.79-432,936.43

Finding the Fourth Proportional to 812,117.54, 1,217,755.79 and 432,936.43

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Solution

The fourth proportional to 812,117.54, 1,217,755.79 and 432,936.43 is: 649,180.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,117.54 : 1,217,755.79 = 432,936.43 : x
  2. Step 2: Convert to fraction form
    812,117.54/1,217,755.79 = 432,936.43/x
  3. Step 3: Cross multiply
    812,117.54x = 1,217,755.79 × 432,936.43
  4. Step 4: Simplify right side
    812,117.54x = 527,210,844,334.43
  5. Step 5: Solve for x
    x = 527,210,844,334.43/812,117.54
  6. Step 6: Final answer
    x = 649,180.47

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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.