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Finding the Fourth Proportional to 622,362.66, 858,863.97 and 354,090.66

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Solution

The fourth proportional to 622,362.66, 858,863.97 and 354,090.66 is: 488,647.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,362.66 : 858,863.97 = 354,090.66 : x
  2. Step 2: Convert to fraction form
    622,362.66/858,863.97 = 354,090.66/x
  3. Step 3: Cross multiply
    622,362.66x = 858,863.97 × 354,090.66
  4. Step 4: Simplify right side
    622,362.66x = 304,115,709,987.52
  5. Step 5: Solve for x
    x = 304,115,709,987.52/622,362.66
  6. Step 6: Final answer
    x = 488,647.10

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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.