Home / 386,534.42-579,856.32-120,321.84

Finding the Fourth Proportional to 386,534.42, 579,856.32 and 120,321.84

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Solution

The fourth proportional to 386,534.42, 579,856.32 and 120,321.84 is: 180,499.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,534.42 : 579,856.32 = 120,321.84 : x
  2. Step 2: Convert to fraction form
    386,534.42/579,856.32 = 120,321.84/x
  3. Step 3: Cross multiply
    386,534.42x = 579,856.32 × 120,321.84
  4. Step 4: Simplify right side
    386,534.42x = 69,769,379,358.03
  5. Step 5: Solve for x
    x = 69,769,379,358.03/386,534.42
  6. Step 6: Final answer
    x = 180,499.79

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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.