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Finding the Fourth Proportional to 636,818.20, 955,227.30 and 424,241.80

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Solution

The fourth proportional to 636,818.20, 955,227.30 and 424,241.80 is: 636,362.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,818.20 : 955,227.30 = 424,241.80 : x
  2. Step 2: Convert to fraction form
    636,818.20/955,227.30 = 424,241.80/x
  3. Step 3: Cross multiply
    636,818.20x = 955,227.30 × 424,241.80
  4. Step 4: Simplify right side
    636,818.20x = 405,247,349,161.14
  5. Step 5: Solve for x
    x = 405,247,349,161.14/636,818.20
  6. Step 6: Final answer
    x = 636,362.70

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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.