Home / 855,214.89-1,282,443.26-455,781.21

Finding the Fourth Proportional to 855,214.89, 1,282,443.26 and 455,781.21

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Solution

The fourth proportional to 855,214.89, 1,282,443.26 and 455,781.21 is: 683,469.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,214.89 : 1,282,443.26 = 455,781.21 : x
  2. Step 2: Convert to fraction form
    855,214.89/1,282,443.26 = 455,781.21/x
  3. Step 3: Cross multiply
    855,214.89x = 1,282,443.26 × 455,781.21
  4. Step 4: Simplify right side
    855,214.89x = 584,513,538,520.24
  5. Step 5: Solve for x
    x = 584,513,538,520.24/855,214.89
  6. Step 6: Final answer
    x = 683,469.79

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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.