Home / 680,835.16-939,531.18-394,360.84

Finding the Fourth Proportional to 680,835.16, 939,531.18 and 394,360.84

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Solution

The fourth proportional to 680,835.16, 939,531.18 and 394,360.84 is: 544,205.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,835.16 : 939,531.18 = 394,360.84 : x
  2. Step 2: Convert to fraction form
    680,835.16/939,531.18 = 394,360.84/x
  3. Step 3: Cross multiply
    680,835.16x = 939,531.18 × 394,360.84
  4. Step 4: Simplify right side
    680,835.16x = 370,514,305,350.99
  5. Step 5: Solve for x
    x = 370,514,305,350.99/680,835.16
  6. Step 6: Final answer
    x = 544,205.60

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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.