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Finding the Fourth Proportional to 515,094.90, 772,642.35 and 326,138.10

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Solution

The fourth proportional to 515,094.90, 772,642.35 and 326,138.10 is: 489,207.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,094.90 : 772,642.35 = 326,138.10 : x
  2. Step 2: Convert to fraction form
    515,094.90/772,642.35 = 326,138.10/x
  3. Step 3: Cross multiply
    515,094.90x = 772,642.35 × 326,138.10
  4. Step 4: Simplify right side
    515,094.90x = 251,988,108,008.54
  5. Step 5: Solve for x
    x = 251,988,108,008.54/515,094.90
  6. Step 6: Final answer
    x = 489,207.15

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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.