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Finding the Fourth Proportional to 510,092.60, 765,138.90 and 431,360.60

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Solution

The fourth proportional to 510,092.60, 765,138.90 and 431,360.60 is: 647,040.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,092.60 : 765,138.90 = 431,360.60 : x
  2. Step 2: Convert to fraction form
    510,092.60/765,138.90 = 431,360.60/x
  3. Step 3: Cross multiply
    510,092.60x = 765,138.90 × 431,360.60
  4. Step 4: Simplify right side
    510,092.60x = 330,050,774,987.34
  5. Step 5: Solve for x
    x = 330,050,774,987.34/510,092.60
  6. Step 6: Final answer
    x = 647,040.90

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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.