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Finding the Fourth Proportional to 663,336.80, 995,005.20 and 424,188.35

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Solution

The fourth proportional to 663,336.80, 995,005.20 and 424,188.35 is: 636,282.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,336.80 : 995,005.20 = 424,188.35 : x
  2. Step 2: Convert to fraction form
    663,336.80/995,005.20 = 424,188.35/x
  3. Step 3: Cross multiply
    663,336.80x = 995,005.20 × 424,188.35
  4. Step 4: Simplify right side
    663,336.80x = 422,069,614,029.42
  5. Step 5: Solve for x
    x = 422,069,614,029.42/663,336.80
  6. Step 6: Final answer
    x = 636,282.53

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Double scale
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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.