Home / 386,326,163.60-579,489,245.40-127,581,318.80

Finding the Fourth Proportional to 386,326,163.60, 579,489,245.40 and 127,581,318.80

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Solution

The fourth proportional to 386,326,163.60, 579,489,245.40 and 127,581,318.80 is: 191,371,978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,326,163.60 : 579,489,245.40 = 127,581,318.80 : x
  2. Step 2: Convert to fraction form
    386,326,163.60/579,489,245.40 = 127,581,318.80/x
  3. Step 3: Cross multiply
    386,326,163.60x = 579,489,245.40 × 127,581,318.80
  4. Step 4: Simplify right side
    386,326,163.60x = 73,932,002,158,548,832
  5. Step 5: Solve for x
    x = 73,932,002,158,548,832/386,326,163.60
  6. Step 6: Final answer
    x = 191,371,978.20

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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.