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Finding the Fourth Proportional to 658,638.22, 908,924.49 and 356,832.22

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Solution

The fourth proportional to 658,638.22, 908,924.49 and 356,832.22 is: 492,430.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,638.22 : 908,924.49 = 356,832.22 : x
  2. Step 2: Convert to fraction form
    658,638.22/908,924.49 = 356,832.22/x
  3. Step 3: Cross multiply
    658,638.22x = 908,924.49 × 356,832.22
  4. Step 4: Simplify right side
    658,638.22x = 324,333,543,579.07
  5. Step 5: Solve for x
    x = 324,333,543,579.07/658,638.22
  6. Step 6: Final answer
    x = 492,430.49

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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.