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Finding the Fourth Proportional to 423,733.70, 635,600.55 and 394,209.20

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Solution

The fourth proportional to 423,733.70, 635,600.55 and 394,209.20 is: 591,313.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,733.70 : 635,600.55 = 394,209.20 : x
  2. Step 2: Convert to fraction form
    423,733.70/635,600.55 = 394,209.20/x
  3. Step 3: Cross multiply
    423,733.70x = 635,600.55 × 394,209.20
  4. Step 4: Simplify right side
    423,733.70x = 250,559,584,335.06
  5. Step 5: Solve for x
    x = 250,559,584,335.06/423,733.70
  6. Step 6: Final answer
    x = 591,313.80

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.