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Finding the Fourth Proportional to 535,680.26, 739,123.28 and 309,194.54

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Solution

The fourth proportional to 535,680.26, 739,123.28 and 309,194.54 is: 426,621.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,680.26 : 739,123.28 = 309,194.54 : x
  2. Step 2: Convert to fraction form
    535,680.26/739,123.28 = 309,194.54/x
  3. Step 3: Cross multiply
    535,680.26x = 739,123.28 × 309,194.54
  4. Step 4: Simplify right side
    535,680.26x = 228,532,877,321.30
  5. Step 5: Solve for x
    x = 228,532,877,321.30/535,680.26
  6. Step 6: Final answer
    x = 426,621.81

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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.