Home / 1,221,334.56-1,685,443.14-712,135.35

Finding the Fourth Proportional to 1,221,334.56, 1,685,443.14 and 712,135.35

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Solution

The fourth proportional to 1,221,334.56, 1,685,443.14 and 712,135.35 is: 982,747.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,334.56 : 1,685,443.14 = 712,135.35 : x
  2. Step 2: Convert to fraction form
    1,221,334.56/1,685,443.14 = 712,135.35/x
  3. Step 3: Cross multiply
    1,221,334.56x = 1,685,443.14 × 712,135.35
  4. Step 4: Simplify right side
    1,221,334.56x = 1,200,263,640,409.00
  5. Step 5: Solve for x
    x = 1,200,263,640,409.00/1,221,334.56
  6. Step 6: Final answer
    x = 982,747.63

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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.