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Finding the Fourth Proportional to 658,424.16, 908,620.56 and 356,616

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Solution

The fourth proportional to 658,424.16, 908,620.56 and 356,616 is: 492,127.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,424.16 : 908,620.56 = 356,616 : x
  2. Step 2: Convert to fraction form
    658,424.16/908,620.56 = 356,616/x
  3. Step 3: Cross multiply
    658,424.16x = 908,620.56 × 356,616
  4. Step 4: Simplify right side
    658,424.16x = 324,028,629,624.96
  5. Step 5: Solve for x
    x = 324,028,629,624.96/658,424.16
  6. Step 6: Final answer
    x = 492,127.49

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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.