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Finding the Fourth Proportional to 2,810,424, 4,215,752.64 and 815,880

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Solution

The fourth proportional to 2,810,424, 4,215,752.64 and 815,880 is: 1,223,853.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810,424 : 4,215,752.64 = 815,880 : x
  2. Step 2: Convert to fraction form
    2,810,424/4,215,752.64 = 815,880/x
  3. Step 3: Cross multiply
    2,810,424x = 4,215,752.64 × 815,880
  4. Step 4: Simplify right side
    2,810,424x = 3,439,548,263,923.20
  5. Step 5: Solve for x
    x = 3,439,548,263,923.20/2,810,424
  6. Step 6: Final answer
    x = 1,223,853.86

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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.