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Finding the Fourth Proportional to 658,615.23, 908,883.31 and 356,808.51

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Solution

The fourth proportional to 658,615.23, 908,883.31 and 356,808.51 is: 492,392.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,615.23 : 908,883.31 = 356,808.51 : x
  2. Step 2: Convert to fraction form
    658,615.23/908,883.31 = 356,808.51/x
  3. Step 3: Cross multiply
    658,615.23x = 908,883.31 × 356,808.51
  4. Step 4: Simplify right side
    658,615.23x = 324,297,299,604.97
  5. Step 5: Solve for x
    x = 324,297,299,604.97/658,615.23
  6. Step 6: Final answer
    x = 492,392.65

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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.