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Finding the Fourth Proportional to 535,891.49, 739,378.76 and 345,015.39

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Solution

The fourth proportional to 535,891.49, 739,378.76 and 345,015.39 is: 476,023.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,891.49 : 739,378.76 = 345,015.39 : x
  2. Step 2: Convert to fraction form
    535,891.49/739,378.76 = 345,015.39/x
  3. Step 3: Cross multiply
    535,891.49x = 739,378.76 × 345,015.39
  4. Step 4: Simplify right side
    535,891.49x = 255,097,049,514.04
  5. Step 5: Solve for x
    x = 255,097,049,514.04/535,891.49
  6. Step 6: Final answer
    x = 476,023.70

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Double scale
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Similar ratio
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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.