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Finding the Fourth Proportional to 658,644.96, 908,930.94 and 356,838.96

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Solution

The fourth proportional to 658,644.96, 908,930.94 and 356,838.96 is: 492,438.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,644.96 : 908,930.94 = 356,838.96 : x
  2. Step 2: Convert to fraction form
    658,644.96/908,930.94 = 356,838.96/x
  3. Step 3: Cross multiply
    658,644.96x = 908,930.94 × 356,838.96
  4. Step 4: Simplify right side
    658,644.96x = 324,341,971,341.42
  5. Step 5: Solve for x
    x = 324,341,971,341.42/658,644.96
  6. Step 6: Final answer
    x = 492,438.25

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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.