Home / 1,246,008.20-1,869,012.30-820,855.40

Finding the Fourth Proportional to 1,246,008.20, 1,869,012.30 and 820,855.40

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Solution

The fourth proportional to 1,246,008.20, 1,869,012.30 and 820,855.40 is: 1,231,283.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246,008.20 : 1,869,012.30 = 820,855.40 : x
  2. Step 2: Convert to fraction form
    1,246,008.20/1,869,012.30 = 820,855.40/x
  3. Step 3: Cross multiply
    1,246,008.20x = 1,869,012.30 × 820,855.40
  4. Step 4: Simplify right side
    1,246,008.20x = 1,534,188,839,121.42
  5. Step 5: Solve for x
    x = 1,534,188,839,121.42/1,246,008.20
  6. Step 6: Final answer
    x = 1,231,283.10

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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.