Home / 386,056.24-579,286.28-280,313.66

Finding the Fourth Proportional to 386,056.24, 579,286.28 and 280,313.66

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Solution

The fourth proportional to 386,056.24, 579,286.28 and 280,313.66 is: 420,617.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,056.24 : 579,286.28 = 280,313.66 : x
  2. Step 2: Convert to fraction form
    386,056.24/579,286.28 = 280,313.66/x
  3. Step 3: Cross multiply
    386,056.24x = 579,286.28 × 280,313.66
  4. Step 4: Simplify right side
    386,056.24x = 162,381,859,483.59
  5. Step 5: Solve for x
    x = 162,381,859,483.59/386,056.24
  6. Step 6: Final answer
    x = 420,617.11

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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.