Home / 3,980,443.80-5,969,499.30-1,421,362.20

Finding the Fourth Proportional to 3,980,443.80, 5,969,499.30 and 1,421,362.20

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Solution

The fourth proportional to 3,980,443.80, 5,969,499.30 and 1,421,362.20 is: 2,131,626.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980,443.80 : 5,969,499.30 = 1,421,362.20 : x
  2. Step 2: Convert to fraction form
    3,980,443.80/5,969,499.30 = 1,421,362.20/x
  3. Step 3: Cross multiply
    3,980,443.80x = 5,969,499.30 × 1,421,362.20
  4. Step 4: Simplify right side
    3,980,443.80x = 8,484,820,657,946.46
  5. Step 5: Solve for x
    x = 8,484,820,657,946.46/3,980,443.80
  6. Step 6: Final answer
    x = 2,131,626.79

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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.