Home / 386,487.36-579,933.72-280,744.92

Finding the Fourth Proportional to 386,487.36, 579,933.72 and 280,744.92

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Solution

The fourth proportional to 386,487.36, 579,933.72 and 280,744.92 is: 421,264.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,487.36 : 579,933.72 = 280,744.92 : x
  2. Step 2: Convert to fraction form
    386,487.36/579,933.72 = 280,744.92/x
  3. Step 3: Cross multiply
    386,487.36x = 579,933.72 × 280,744.92
  4. Step 4: Simplify right side
    386,487.36x = 162,813,445,826.70
  5. Step 5: Solve for x
    x = 162,813,445,826.70/386,487.36
  6. Step 6: Final answer
    x = 421,264.61

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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.