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Finding the Fourth Proportional to 658,623.21, 908,900.97 and 356,817.21

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Solution

The fourth proportional to 658,623.21, 908,900.97 and 356,817.21 is: 492,408.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,623.21 : 908,900.97 = 356,817.21 : x
  2. Step 2: Convert to fraction form
    658,623.21/908,900.97 = 356,817.21/x
  3. Step 3: Cross multiply
    658,623.21x = 908,900.97 × 356,817.21
  4. Step 4: Simplify right side
    658,623.21x = 324,311,508,281.69
  5. Step 5: Solve for x
    x = 324,311,508,281.69/658,623.21
  6. Step 6: Final answer
    x = 492,408.26

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1.5x scale

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.