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Finding the Fourth Proportional to 628,999.52, 867,996.42 and 342,513.32

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Solution

The fourth proportional to 628,999.52, 867,996.42 and 342,513.32 is: 472,655.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,999.52 : 867,996.42 = 342,513.32 : x
  2. Step 2: Convert to fraction form
    628,999.52/867,996.42 = 342,513.32/x
  3. Step 3: Cross multiply
    628,999.52x = 867,996.42 × 342,513.32
  4. Step 4: Simplify right side
    628,999.52x = 297,300,335,562.31
  5. Step 5: Solve for x
    x = 297,300,335,562.31/628,999.52
  6. Step 6: Final answer
    x = 472,655.90

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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.