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Finding the Fourth Proportional to 707,608.53, 976,500.09 and 385,318.62

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Solution

The fourth proportional to 707,608.53, 976,500.09 and 385,318.62 is: 531,739.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,608.53 : 976,500.09 = 385,318.62 : x
  2. Step 2: Convert to fraction form
    707,608.53/976,500.09 = 385,318.62/x
  3. Step 3: Cross multiply
    707,608.53x = 976,500.09 × 385,318.62
  4. Step 4: Simplify right side
    707,608.53x = 376,263,667,108.68
  5. Step 5: Solve for x
    x = 376,263,667,108.68/707,608.53
  6. Step 6: Final answer
    x = 531,739.87

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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.