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Finding the Fourth Proportional to 567,909.78, 783,730.29 and 309,791.07

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Solution

The fourth proportional to 567,909.78, 783,730.29 and 309,791.07 is: 427,519.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,909.78 : 783,730.29 = 309,791.07 : x
  2. Step 2: Convert to fraction form
    567,909.78/783,730.29 = 309,791.07/x
  3. Step 3: Cross multiply
    567,909.78x = 783,730.29 × 309,791.07
  4. Step 4: Simplify right side
    567,909.78x = 242,792,645,130.51
  5. Step 5: Solve for x
    x = 242,792,645,130.51/567,909.78
  6. Step 6: Final answer
    x = 427,519.75

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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.