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Finding the Fourth Proportional to 491,200.70, 736,801.05 and 426,246.80

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Solution

The fourth proportional to 491,200.70, 736,801.05 and 426,246.80 is: 639,370.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,200.70 : 736,801.05 = 426,246.80 : x
  2. Step 2: Convert to fraction form
    491,200.70/736,801.05 = 426,246.80/x
  3. Step 3: Cross multiply
    491,200.70x = 736,801.05 × 426,246.80
  4. Step 4: Simplify right side
    491,200.70x = 314,059,089,799.14
  5. Step 5: Solve for x
    x = 314,059,089,799.14/491,200.70
  6. Step 6: Final answer
    x = 639,370.20

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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.