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Finding the Fourth Proportional to 529,843.20, 794,764.80 and 319,891.20

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Solution

The fourth proportional to 529,843.20, 794,764.80 and 319,891.20 is: 479,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,843.20 : 794,764.80 = 319,891.20 : x
  2. Step 2: Convert to fraction form
    529,843.20/794,764.80 = 319,891.20/x
  3. Step 3: Cross multiply
    529,843.20x = 794,764.80 × 319,891.20
  4. Step 4: Simplify right side
    529,843.20x = 254,238,265,589.76
  5. Step 5: Solve for x
    x = 254,238,265,589.76/529,843.20
  6. Step 6: Final answer
    x = 479,836.80

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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.