Home / 1,991,094.75-2,986,387.92-643,117.32

Finding the Fourth Proportional to 1,991,094.75, 2,986,387.92 and 643,117.32

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Solution

The fourth proportional to 1,991,094.75, 2,986,387.92 and 643,117.32 is: 964,593.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,094.75 : 2,986,387.92 = 643,117.32 : x
  2. Step 2: Convert to fraction form
    1,991,094.75/2,986,387.92 = 643,117.32/x
  3. Step 3: Cross multiply
    1,991,094.75x = 2,986,387.92 × 643,117.32
  4. Step 4: Simplify right side
    1,991,094.75x = 1,920,597,795,590.77
  5. Step 5: Solve for x
    x = 1,920,597,795,590.77/1,991,094.75
  6. Step 6: Final answer
    x = 964,593.87

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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.