Home / 691,739.72-954,592.26-389,933.72

Finding the Fourth Proportional to 691,739.72, 954,592.26 and 389,933.72

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Solution

The fourth proportional to 691,739.72, 954,592.26 and 389,933.72 is: 538,103.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,739.72 : 954,592.26 = 389,933.72 : x
  2. Step 2: Convert to fraction form
    691,739.72/954,592.26 = 389,933.72/x
  3. Step 3: Cross multiply
    691,739.72x = 954,592.26 × 389,933.72
  4. Step 4: Simplify right side
    691,739.72x = 372,227,711,025.01
  5. Step 5: Solve for x
    x = 372,227,711,025.01/691,739.72
  6. Step 6: Final answer
    x = 538,103.71

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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.