Home / 386,331.20-579,496.80-339,675.20

Finding the Fourth Proportional to 386,331.20, 579,496.80 and 339,675.20

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Solution

The fourth proportional to 386,331.20, 579,496.80 and 339,675.20 is: 509,512.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,331.20 : 579,496.80 = 339,675.20 : x
  2. Step 2: Convert to fraction form
    386,331.20/579,496.80 = 339,675.20/x
  3. Step 3: Cross multiply
    386,331.20x = 579,496.80 × 339,675.20
  4. Step 4: Simplify right side
    386,331.20x = 196,840,691,439.36
  5. Step 5: Solve for x
    x = 196,840,691,439.36/386,331.20
  6. Step 6: Final answer
    x = 509,512.80

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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.