Home / 1,246,505.40-1,869,758.10-405,142.20

Finding the Fourth Proportional to 1,246,505.40, 1,869,758.10 and 405,142.20

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Solution

The fourth proportional to 1,246,505.40, 1,869,758.10 and 405,142.20 is: 607,713.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246,505.40 : 1,869,758.10 = 405,142.20 : x
  2. Step 2: Convert to fraction form
    1,246,505.40/1,869,758.10 = 405,142.20/x
  3. Step 3: Cross multiply
    1,246,505.40x = 1,869,758.10 × 405,142.20
  4. Step 4: Simplify right side
    1,246,505.40x = 757,517,910,101.82
  5. Step 5: Solve for x
    x = 757,517,910,101.82/1,246,505.40
  6. Step 6: Final answer
    x = 607,713.30

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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.