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Finding the Fourth Proportional to 515,083.20, 772,624.80 and 486,052.80

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Solution

The fourth proportional to 515,083.20, 772,624.80 and 486,052.80 is: 729,079.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,083.20 : 772,624.80 = 486,052.80 : x
  2. Step 2: Convert to fraction form
    515,083.20/772,624.80 = 486,052.80/x
  3. Step 3: Cross multiply
    515,083.20x = 772,624.80 × 486,052.80
  4. Step 4: Simplify right side
    515,083.20x = 375,536,447,389.44
  5. Step 5: Solve for x
    x = 375,536,447,389.44/515,083.20
  6. Step 6: Final answer
    x = 729,079.20

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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.