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Finding the Fourth Proportional to 8,381,215.80, 12,571,823.70 and 2,990,042.10

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Solution

The fourth proportional to 8,381,215.80, 12,571,823.70 and 2,990,042.10 is: 4,485,063.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,381,215.80 : 12,571,823.70 = 2,990,042.10 : x
  2. Step 2: Convert to fraction form
    8,381,215.80/12,571,823.70 = 2,990,042.10/x
  3. Step 3: Cross multiply
    8,381,215.80x = 12,571,823.70 × 2,990,042.10
  4. Step 4: Simplify right side
    8,381,215.80x = 37,590,282,136,777.77
  5. Step 5: Solve for x
    x = 37,590,282,136,777.77/8,381,215.80
  6. Step 6: Final answer
    x = 4,485,063.15

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Similar ratio
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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.