Home / 681,040.19-939,835.42-394,726.35

Finding the Fourth Proportional to 681,040.19, 939,835.42 and 394,726.35

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Solution

The fourth proportional to 681,040.19, 939,835.42 and 394,726.35 is: 544,722.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,040.19 : 939,835.42 = 394,726.35 : x
  2. Step 2: Convert to fraction form
    681,040.19/939,835.42 = 394,726.35/x
  3. Step 3: Cross multiply
    681,040.19x = 939,835.42 × 394,726.35
  4. Step 4: Simplify right side
    681,040.19x = 370,977,804,937.32
  5. Step 5: Solve for x
    x = 370,977,804,937.32/681,040.19
  6. Step 6: Final answer
    x = 544,722.34

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Double scale
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1.5x scale

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.