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Finding the Fourth Proportional to 658,435, 908,640.32 and 356,629

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Solution

The fourth proportional to 658,435, 908,640.32 and 356,629 is: 492,148.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,435 : 908,640.32 = 356,629 : x
  2. Step 2: Convert to fraction form
    658,435/908,640.32 = 356,629/x
  3. Step 3: Cross multiply
    658,435x = 908,640.32 × 356,629
  4. Step 4: Simplify right side
    658,435x = 324,047,488,681.28
  5. Step 5: Solve for x
    x = 324,047,488,681.28/658,435
  6. Step 6: Final answer
    x = 492,148.03

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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.