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Finding the Fourth Proportional to 515,021.40, 772,532.10 and 326,064.60

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Solution

The fourth proportional to 515,021.40, 772,532.10 and 326,064.60 is: 489,096.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,021.40 : 772,532.10 = 326,064.60 : x
  2. Step 2: Convert to fraction form
    515,021.40/772,532.10 = 326,064.60/x
  3. Step 3: Cross multiply
    515,021.40x = 772,532.10 × 326,064.60
  4. Step 4: Simplify right side
    515,021.40x = 251,895,370,173.66
  5. Step 5: Solve for x
    x = 251,895,370,173.66/515,021.40
  6. Step 6: Final answer
    x = 489,096.90

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Similar ratio
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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.