Home / 1,215,866.70-1,677,982.91-671,990.78

Finding the Fourth Proportional to 1,215,866.70, 1,677,982.91 and 671,990.78

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Solution

The fourth proportional to 1,215,866.70, 1,677,982.91 and 671,990.78 is: 927,395.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,866.70 : 1,677,982.91 = 671,990.78 : x
  2. Step 2: Convert to fraction form
    1,215,866.70/1,677,982.91 = 671,990.78/x
  3. Step 3: Cross multiply
    1,215,866.70x = 1,677,982.91 × 671,990.78
  4. Step 4: Simplify right side
    1,215,866.70x = 1,127,589,045,352.57
  5. Step 5: Solve for x
    x = 1,127,589,045,352.57/1,215,866.70
  6. Step 6: Final answer
    x = 927,395.29

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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.