Home / 1,221,344.56-1,685,456.94-712,145.35

Finding the Fourth Proportional to 1,221,344.56, 1,685,456.94 and 712,145.35

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Solution

The fourth proportional to 1,221,344.56, 1,685,456.94 and 712,145.35 is: 982,761.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,344.56 : 1,685,456.94 = 712,145.35 : x
  2. Step 2: Convert to fraction form
    1,221,344.56/1,685,456.94 = 712,145.35/x
  3. Step 3: Cross multiply
    1,221,344.56x = 1,685,456.94 × 712,145.35
  4. Step 4: Simplify right side
    1,221,344.56x = 1,200,290,322,446.23
  5. Step 5: Solve for x
    x = 1,200,290,322,446.23/1,221,344.56
  6. Step 6: Final answer
    x = 982,761.43

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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.