Home / 809,736.92-1,117,903.40-538,173.08

Finding the Fourth Proportional to 809,736.92, 1,117,903.40 and 538,173.08

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Solution

The fourth proportional to 809,736.92, 1,117,903.40 and 538,173.08 is: 742,988.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,736.92 : 1,117,903.40 = 538,173.08 : x
  2. Step 2: Convert to fraction form
    809,736.92/1,117,903.40 = 538,173.08/x
  3. Step 3: Cross multiply
    809,736.92x = 1,117,903.40 × 538,173.08
  4. Step 4: Simplify right side
    809,736.92x = 601,625,515,920.47
  5. Step 5: Solve for x
    x = 601,625,515,920.47/809,736.92
  6. Step 6: Final answer
    x = 742,988.87

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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.