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Finding the Fourth Proportional to 658,081.87, 908,069.53 and 386,050.51

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Solution

The fourth proportional to 658,081.87, 908,069.53 and 386,050.51 is: 532,700.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,081.87 : 908,069.53 = 386,050.51 : x
  2. Step 2: Convert to fraction form
    658,081.87/908,069.53 = 386,050.51/x
  3. Step 3: Cross multiply
    658,081.87x = 908,069.53 × 386,050.51
  4. Step 4: Simplify right side
    658,081.87x = 350,560,705,171.96
  5. Step 5: Solve for x
    x = 350,560,705,171.96/658,081.87
  6. Step 6: Final answer
    x = 532,700.75

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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.