Home / 3,168,990-4,373,213.40-1,810,859.76

Finding the Fourth Proportional to 3,168,990, 4,373,213.40 and 1,810,859.76

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Solution

The fourth proportional to 3,168,990, 4,373,213.40 and 1,810,859.76 is: 2,498,990.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168,990 : 4,373,213.40 = 1,810,859.76 : x
  2. Step 2: Convert to fraction form
    3,168,990/4,373,213.40 = 1,810,859.76/x
  3. Step 3: Cross multiply
    3,168,990x = 4,373,213.40 × 1,810,859.76
  4. Step 4: Simplify right side
    3,168,990x = 7,919,276,167,952.79
  5. Step 5: Solve for x
    x = 7,919,276,167,952.79/3,168,990
  6. Step 6: Final answer
    x = 2,498,990.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.