Home / 439,568.69-658,868.65-287,583.12

Finding the Fourth Proportional to 439,568.69, 658,868.65 and 287,583.12

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Solution

The fourth proportional to 439,568.69, 658,868.65 and 287,583.12 is: 431,057.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,568.69 : 658,868.65 = 287,583.12 : x
  2. Step 2: Convert to fraction form
    439,568.69/658,868.65 = 287,583.12/x
  3. Step 3: Cross multiply
    439,568.69x = 658,868.65 × 287,583.12
  4. Step 4: Simplify right side
    439,568.69x = 189,479,501,318.23
  5. Step 5: Solve for x
    x = 189,479,501,318.23/439,568.69
  6. Step 6: Final answer
    x = 431,057.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.