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Finding the Fourth Proportional to 538,896.30, 808,344.45 and 326,319.90

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Solution

The fourth proportional to 538,896.30, 808,344.45 and 326,319.90 is: 489,479.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,896.30 : 808,344.45 = 326,319.90 : x
  2. Step 2: Convert to fraction form
    538,896.30/808,344.45 = 326,319.90/x
  3. Step 3: Cross multiply
    538,896.30x = 808,344.45 × 326,319.90
  4. Step 4: Simplify right side
    538,896.30x = 263,778,880,089.56
  5. Step 5: Solve for x
    x = 263,778,880,089.56/538,896.30
  6. Step 6: Final answer
    x = 489,479.85

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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.