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Finding the Fourth Proportional to 535,700.88, 739,213.40 and 320,835.44

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Solution

The fourth proportional to 535,700.88, 739,213.40 and 320,835.44 is: 442,720.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,700.88 : 739,213.40 = 320,835.44 : x
  2. Step 2: Convert to fraction form
    535,700.88/739,213.40 = 320,835.44/x
  3. Step 3: Cross multiply
    535,700.88x = 739,213.40 × 320,835.44
  4. Step 4: Simplify right side
    535,700.88x = 237,165,856,442.90
  5. Step 5: Solve for x
    x = 237,165,856,442.90/535,700.88
  6. Step 6: Final answer
    x = 442,720.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.