Home / 2,790,864.80-4,186,297.20-689,616.80

Finding the Fourth Proportional to 2,790,864.80, 4,186,297.20 and 689,616.80

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Solution

The fourth proportional to 2,790,864.80, 4,186,297.20 and 689,616.80 is: 1,034,425.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790,864.80 : 4,186,297.20 = 689,616.80 : x
  2. Step 2: Convert to fraction form
    2,790,864.80/4,186,297.20 = 689,616.80/x
  3. Step 3: Cross multiply
    2,790,864.80x = 4,186,297.20 × 689,616.80
  4. Step 4: Simplify right side
    2,790,864.80x = 2,886,940,878,912.96
  5. Step 5: Solve for x
    x = 2,886,940,878,912.96/2,790,864.80
  6. Step 6: Final answer
    x = 1,034,425.20

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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.