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Finding the Fourth Proportional to 819,808.29, 1,221,562.42 and 730,374.57

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Solution

The fourth proportional to 819,808.29, 1,221,562.42 and 730,374.57 is: 1,088,300.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,808.29 : 1,221,562.42 = 730,374.57 : x
  2. Step 2: Convert to fraction form
    819,808.29/1,221,562.42 = 730,374.57/x
  3. Step 3: Cross multiply
    819,808.29x = 1,221,562.42 × 730,374.57
  4. Step 4: Simplify right side
    819,808.29x = 892,198,127,235.66
  5. Step 5: Solve for x
    x = 892,198,127,235.66/819,808.29
  6. Step 6: Final answer
    x = 1,088,300.93

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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.