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Finding the Fourth Proportional to 567,908.66, 783,728.73 and 309,789.96

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Solution

The fourth proportional to 567,908.66, 783,728.73 and 309,789.96 is: 427,518.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,908.66 : 783,728.73 = 309,789.96 : x
  2. Step 2: Convert to fraction form
    567,908.66/783,728.73 = 309,789.96/x
  3. Step 3: Cross multiply
    567,908.66x = 783,728.73 × 309,789.96
  4. Step 4: Simplify right side
    567,908.66x = 242,791,291,917.55
  5. Step 5: Solve for x
    x = 242,791,291,917.55/567,908.66
  6. Step 6: Final answer
    x = 427,518.21

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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.