Home / 931,622.10-1,286,614.44-641,986.78

Finding the Fourth Proportional to 931,622.10, 1,286,614.44 and 641,986.78

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Solution

The fourth proportional to 931,622.10, 1,286,614.44 and 641,986.78 is: 886,614.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,622.10 : 1,286,614.44 = 641,986.78 : x
  2. Step 2: Convert to fraction form
    931,622.10/1,286,614.44 = 641,986.78/x
  3. Step 3: Cross multiply
    931,622.10x = 1,286,614.44 × 641,986.78
  4. Step 4: Simplify right side
    931,622.10x = 825,989,461,437.10
  5. Step 5: Solve for x
    x = 825,989,461,437.10/931,622.10
  6. Step 6: Final answer
    x = 886,614.28

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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.