Home / 680,686.34-939,241.02-394,151.06

Finding the Fourth Proportional to 680,686.34, 939,241.02 and 394,151.06

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Solution

The fourth proportional to 680,686.34, 939,241.02 and 394,151.06 is: 543,867.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,686.34 : 939,241.02 = 394,151.06 : x
  2. Step 2: Convert to fraction form
    680,686.34/939,241.02 = 394,151.06/x
  3. Step 3: Cross multiply
    680,686.34x = 939,241.02 × 394,151.06
  4. Step 4: Simplify right side
    680,686.34x = 370,202,845,237.55
  5. Step 5: Solve for x
    x = 370,202,845,237.55/680,686.34
  6. Step 6: Final answer
    x = 543,867.02

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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.