Home / 1,387,961.70-2,081,942.55-441,428.10

Finding the Fourth Proportional to 1,387,961.70, 2,081,942.55 and 441,428.10

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Solution

The fourth proportional to 1,387,961.70, 2,081,942.55 and 441,428.10 is: 662,142.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,961.70 : 2,081,942.55 = 441,428.10 : x
  2. Step 2: Convert to fraction form
    1,387,961.70/2,081,942.55 = 441,428.10/x
  3. Step 3: Cross multiply
    1,387,961.70x = 2,081,942.55 × 441,428.10
  4. Step 4: Simplify right side
    1,387,961.70x = 919,027,944,155.66
  5. Step 5: Solve for x
    x = 919,027,944,155.66/1,387,961.70
  6. Step 6: Final answer
    x = 662,142.15

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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.