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Finding the Fourth Proportional to 658,675.20, 908,971.86 and 356,869.20

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Solution

The fourth proportional to 658,675.20, 908,971.86 and 356,869.20 is: 492,479.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,675.20 : 908,971.86 = 356,869.20 : x
  2. Step 2: Convert to fraction form
    658,675.20/908,971.86 = 356,869.20/x
  3. Step 3: Cross multiply
    658,675.20x = 908,971.86 × 356,869.20
  4. Step 4: Simplify right side
    658,675.20x = 324,384,060,500.71
  5. Step 5: Solve for x
    x = 324,384,060,500.71/658,675.20
  6. Step 6: Final answer
    x = 492,479.54

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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.