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Finding the Fourth Proportional to 567,512.49, 783,172.50 and 312,872.79

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Solution

The fourth proportional to 567,512.49, 783,172.50 and 312,872.79 is: 431,767.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,512.49 : 783,172.50 = 312,872.79 : x
  2. Step 2: Convert to fraction form
    567,512.49/783,172.50 = 312,872.79/x
  3. Step 3: Cross multiply
    567,512.49x = 783,172.50 × 312,872.79
  4. Step 4: Simplify right side
    567,512.49x = 245,033,365,126.28
  5. Step 5: Solve for x
    x = 245,033,365,126.28/567,512.49
  6. Step 6: Final answer
    x = 431,767.35

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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.