Home / 931,618.10-1,286,608.92-641,982.76

Finding the Fourth Proportional to 931,618.10, 1,286,608.92 and 641,982.76

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Solution

The fourth proportional to 931,618.10, 1,286,608.92 and 641,982.76 is: 886,608.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,618.10 : 1,286,608.92 = 641,982.76 : x
  2. Step 2: Convert to fraction form
    931,618.10/1,286,608.92 = 641,982.76/x
  3. Step 3: Cross multiply
    931,618.10x = 1,286,608.92 × 641,982.76
  4. Step 4: Simplify right side
    931,618.10x = 825,980,745,502.22
  5. Step 5: Solve for x
    x = 825,980,745,502.22/931,618.10
  6. Step 6: Final answer
    x = 886,608.74

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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.