Home / 897,679.26-1,238,844.78-515,730.78

Finding the Fourth Proportional to 897,679.26, 1,238,844.78 and 515,730.78

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Solution

The fourth proportional to 897,679.26, 1,238,844.78 and 515,730.78 is: 711,735.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,679.26 : 1,238,844.78 = 515,730.78 : x
  2. Step 2: Convert to fraction form
    897,679.26/1,238,844.78 = 515,730.78/x
  3. Step 3: Cross multiply
    897,679.26x = 1,238,844.78 × 515,730.78
  4. Step 4: Simplify right side
    897,679.26x = 638,910,384,688.33
  5. Step 5: Solve for x
    x = 638,910,384,688.33/897,679.26
  6. Step 6: Final answer
    x = 711,735.71

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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.