Home / 689,986.14-952,179.21-388,180.14

Finding the Fourth Proportional to 689,986.14, 952,179.21 and 388,180.14

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Solution

The fourth proportional to 689,986.14, 952,179.21 and 388,180.14 is: 535,687.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,986.14 : 952,179.21 = 388,180.14 : x
  2. Step 2: Convert to fraction form
    689,986.14/952,179.21 = 388,180.14/x
  3. Step 3: Cross multiply
    689,986.14x = 952,179.21 × 388,180.14
  4. Step 4: Simplify right side
    689,986.14x = 369,617,059,042.89
  5. Step 5: Solve for x
    x = 369,617,059,042.89/689,986.14
  6. Step 6: Final answer
    x = 535,687.66

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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.