Home / 811,413.25-1,215,676.44-691,871.83

Finding the Fourth Proportional to 811,413.25, 1,215,676.44 and 691,871.83

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Solution

The fourth proportional to 811,413.25, 1,215,676.44 and 691,871.83 is: 1,036,576.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,413.25 : 1,215,676.44 = 691,871.83 : x
  2. Step 2: Convert to fraction form
    811,413.25/1,215,676.44 = 691,871.83/x
  3. Step 3: Cross multiply
    811,413.25x = 1,215,676.44 × 691,871.83
  4. Step 4: Simplify right side
    811,413.25x = 841,092,283,230.69
  5. Step 5: Solve for x
    x = 841,092,283,230.69/811,413.25
  6. Step 6: Final answer
    x = 1,036,576.96

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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.