Home / 691,742.62-954,606.39-389,936.62

Finding the Fourth Proportional to 691,742.62, 954,606.39 and 389,936.62

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Solution

The fourth proportional to 691,742.62, 954,606.39 and 389,936.62 is: 538,113.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,742.62 : 954,606.39 = 389,936.62 : x
  2. Step 2: Convert to fraction form
    691,742.62/954,606.39 = 389,936.62/x
  3. Step 3: Cross multiply
    691,742.62x = 954,606.39 × 389,936.62
  4. Step 4: Simplify right side
    691,742.62x = 372,235,989,147.00
  5. Step 5: Solve for x
    x = 372,235,989,147.00/691,742.62
  6. Step 6: Final answer
    x = 538,113.42

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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.