Home / 917,791.66-1,376,214.78-411,918.97

Finding the Fourth Proportional to 917,791.66, 1,376,214.78 and 411,918.97

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Solution

The fourth proportional to 917,791.66, 1,376,214.78 and 411,918.97 is: 617,666.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,791.66 : 1,376,214.78 = 411,918.97 : x
  2. Step 2: Convert to fraction form
    917,791.66/1,376,214.78 = 411,918.97/x
  3. Step 3: Cross multiply
    917,791.66x = 1,376,214.78 × 411,918.97
  4. Step 4: Simplify right side
    917,791.66x = 566,888,969,176.25
  5. Step 5: Solve for x
    x = 566,888,969,176.25/917,791.66
  6. Step 6: Final answer
    x = 617,666.29

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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.