Home / 931,318.50-1,286,195.29-641,683.16

Finding the Fourth Proportional to 931,318.50, 1,286,195.29 and 641,683.16

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Solution

The fourth proportional to 931,318.50, 1,286,195.29 and 641,683.16 is: 886,195.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,318.50 : 1,286,195.29 = 641,683.16 : x
  2. Step 2: Convert to fraction form
    931,318.50/1,286,195.29 = 641,683.16/x
  3. Step 3: Cross multiply
    931,318.50x = 1,286,195.29 × 641,683.16
  4. Step 4: Simplify right side
    931,318.50x = 825,329,858,064.32
  5. Step 5: Solve for x
    x = 825,329,858,064.32/931,318.50
  6. Step 6: Final answer
    x = 886,195.06

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Double scale
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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.