Home / 643,680.30-965,587.86-238,983.24

Finding the Fourth Proportional to 643,680.30, 965,587.86 and 238,983.24

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Solution

The fourth proportional to 643,680.30, 965,587.86 and 238,983.24 is: 358,499.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,680.30 : 965,587.86 = 238,983.24 : x
  2. Step 2: Convert to fraction form
    643,680.30/965,587.86 = 238,983.24/x
  3. Step 3: Cross multiply
    643,680.30x = 965,587.86 × 238,983.24
  4. Step 4: Simplify right side
    643,680.30x = 230,759,315,287.47
  5. Step 5: Solve for x
    x = 230,759,315,287.47/643,680.30
  6. Step 6: Final answer
    x = 358,499.89

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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.