Home / 1,440,020.82-1,987,208.06-786,638.92

Finding the Fourth Proportional to 1,440,020.82, 1,987,208.06 and 786,638.92

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Solution

The fourth proportional to 1,440,020.82, 1,987,208.06 and 786,638.92 is: 1,085,550.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,020.82 : 1,987,208.06 = 786,638.92 : x
  2. Step 2: Convert to fraction form
    1,440,020.82/1,987,208.06 = 786,638.92/x
  3. Step 3: Cross multiply
    1,440,020.82x = 1,987,208.06 × 786,638.92
  4. Step 4: Simplify right side
    1,440,020.82x = 1,563,215,202,133.70
  5. Step 5: Solve for x
    x = 1,563,215,202,133.70/1,440,020.82
  6. Step 6: Final answer
    x = 1,085,550.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.