Home / 1,345,276.80-2,017,915.20-1,212,416.55

Finding the Fourth Proportional to 1,345,276.80, 2,017,915.20 and 1,212,416.55

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Solution

The fourth proportional to 1,345,276.80, 2,017,915.20 and 1,212,416.55 is: 1,818,624.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345,276.80 : 2,017,915.20 = 1,212,416.55 : x
  2. Step 2: Convert to fraction form
    1,345,276.80/2,017,915.20 = 1,212,416.55/x
  3. Step 3: Cross multiply
    1,345,276.80x = 2,017,915.20 × 1,212,416.55
  4. Step 4: Simplify right side
    1,345,276.80x = 2,446,553,784,976.56
  5. Step 5: Solve for x
    x = 2,446,553,784,976.56/1,345,276.80
  6. Step 6: Final answer
    x = 1,818,624.83

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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.