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Finding the Fourth Proportional to 819,806.54, 1,221,559.81 and 730,372.82

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Solution

The fourth proportional to 819,806.54, 1,221,559.81 and 730,372.82 is: 1,088,298.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,806.54 : 1,221,559.81 = 730,372.82 : x
  2. Step 2: Convert to fraction form
    819,806.54/1,221,559.81 = 730,372.82/x
  3. Step 3: Cross multiply
    819,806.54x = 1,221,559.81 × 730,372.82
  4. Step 4: Simplify right side
    819,806.54x = 892,194,083,228.36
  5. Step 5: Solve for x
    x = 892,194,083,228.36/819,806.54
  6. Step 6: Final answer
    x = 1,088,298.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.