Home / 680,302.92-1,019,563.74-280,478.28

Finding the Fourth Proportional to 680,302.92, 1,019,563.74 and 280,478.28

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Solution

The fourth proportional to 680,302.92, 1,019,563.74 and 280,478.28 is: 420,350.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,302.92 : 1,019,563.74 = 280,478.28 : x
  2. Step 2: Convert to fraction form
    680,302.92/1,019,563.74 = 280,478.28/x
  3. Step 3: Cross multiply
    680,302.92x = 1,019,563.74 × 280,478.28
  4. Step 4: Simplify right side
    680,302.92x = 285,965,484,145.57
  5. Step 5: Solve for x
    x = 285,965,484,145.57/680,302.92
  6. Step 6: Final answer
    x = 420,350.22

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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.