Home / 1,281,111.99-1,921,747.23-428,260.38

Finding the Fourth Proportional to 1,281,111.99, 1,921,747.23 and 428,260.38

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Solution

The fourth proportional to 1,281,111.99, 1,921,747.23 and 428,260.38 is: 642,417.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,111.99 : 1,921,747.23 = 428,260.38 : x
  2. Step 2: Convert to fraction form
    1,281,111.99/1,921,747.23 = 428,260.38/x
  3. Step 3: Cross multiply
    1,281,111.99x = 1,921,747.23 × 428,260.38
  4. Step 4: Simplify right side
    1,281,111.99x = 823,008,198,983.75
  5. Step 5: Solve for x
    x = 823,008,198,983.75/1,281,111.99
  6. Step 6: Final answer
    x = 642,417.06

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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.