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Finding the Fourth Proportional to 493,394.33, 680,884.07 and 278,534.39

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Solution

The fourth proportional to 493,394.33, 680,884.07 and 278,534.39 is: 384,377.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,394.33 : 680,884.07 = 278,534.39 : x
  2. Step 2: Convert to fraction form
    493,394.33/680,884.07 = 278,534.39/x
  3. Step 3: Cross multiply
    493,394.33x = 680,884.07 × 278,534.39
  4. Step 4: Simplify right side
    493,394.33x = 189,649,624,301.08
  5. Step 5: Solve for x
    x = 189,649,624,301.08/493,394.33
  6. Step 6: Final answer
    x = 384,377.39

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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.