Home / 438,912.20-605,723.47-257,676.73

Finding the Fourth Proportional to 438,912.20, 605,723.47 and 257,676.73

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Solution

The fourth proportional to 438,912.20, 605,723.47 and 257,676.73 is: 355,608.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,912.20 : 605,723.47 = 257,676.73 : x
  2. Step 2: Convert to fraction form
    438,912.20/605,723.47 = 257,676.73/x
  3. Step 3: Cross multiply
    438,912.20x = 605,723.47 × 257,676.73
  4. Step 4: Simplify right side
    438,912.20x = 156,080,840,875.35
  5. Step 5: Solve for x
    x = 156,080,840,875.35/438,912.20
  6. Step 6: Final answer
    x = 355,608.34

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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.