Home / 918,648.92-1,377,884.27-278,958.21

Finding the Fourth Proportional to 918,648.92, 1,377,884.27 and 278,958.21

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Solution

The fourth proportional to 918,648.92, 1,377,884.27 and 278,958.21 is: 418,410.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,648.92 : 1,377,884.27 = 278,958.21 : x
  2. Step 2: Convert to fraction form
    918,648.92/1,377,884.27 = 278,958.21/x
  3. Step 3: Cross multiply
    918,648.92x = 1,377,884.27 × 278,958.21
  4. Step 4: Simplify right side
    918,648.92x = 384,372,128,151.57
  5. Step 5: Solve for x
    x = 384,372,128,151.57/918,648.92
  6. Step 6: Final answer
    x = 418,410.26

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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.