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Finding the Fourth Proportional to 658,639.71, 908,923.73 and 356,833.71

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Solution

The fourth proportional to 658,639.71, 908,923.73 and 356,833.71 is: 492,431.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,639.71 : 908,923.73 = 356,833.71 : x
  2. Step 2: Convert to fraction form
    658,639.71/908,923.73 = 356,833.71/x
  3. Step 3: Cross multiply
    658,639.71x = 908,923.73 × 356,833.71
  4. Step 4: Simplify right side
    658,639.71x = 324,334,624,898.77
  5. Step 5: Solve for x
    x = 324,334,624,898.77/658,639.71
  6. Step 6: Final answer
    x = 492,431.02

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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.