Home / 931,616.10-1,286,606.16-641,980.76

Finding the Fourth Proportional to 931,616.10, 1,286,606.16 and 641,980.76

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Solution

The fourth proportional to 931,616.10, 1,286,606.16 and 641,980.76 is: 886,605.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,616.10 : 1,286,606.16 = 641,980.76 : x
  2. Step 2: Convert to fraction form
    931,616.10/1,286,606.16 = 641,980.76/x
  3. Step 3: Cross multiply
    931,616.10x = 1,286,606.16 × 641,980.76
  4. Step 4: Simplify right side
    931,616.10x = 825,976,393,984.45
  5. Step 5: Solve for x
    x = 825,976,393,984.45/931,616.10
  6. Step 6: Final answer
    x = 886,605.97

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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.