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Finding the Fourth Proportional to 658,425.16, 908,621.94 and 356,617

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Solution

The fourth proportional to 658,425.16, 908,621.94 and 356,617 is: 492,128.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,425.16 : 908,621.94 = 356,617 : x
  2. Step 2: Convert to fraction form
    658,425.16/908,621.94 = 356,617/x
  3. Step 3: Cross multiply
    658,425.16x = 908,621.94 × 356,617
  4. Step 4: Simplify right side
    658,425.16x = 324,030,030,376.98
  5. Step 5: Solve for x
    x = 324,030,030,376.98/658,425.16
  6. Step 6: Final answer
    x = 492,128.87

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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.