Home / 1,092,407.80-1,638,611.70-694,811.20

Finding the Fourth Proportional to 1,092,407.80, 1,638,611.70 and 694,811.20

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Solution

The fourth proportional to 1,092,407.80, 1,638,611.70 and 694,811.20 is: 1,042,216.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,092,407.80 : 1,638,611.70 = 694,811.20 : x
  2. Step 2: Convert to fraction form
    1,092,407.80/1,638,611.70 = 694,811.20/x
  3. Step 3: Cross multiply
    1,092,407.80x = 1,638,611.70 × 694,811.20
  4. Step 4: Simplify right side
    1,092,407.80x = 1,138,525,761,611.04
  5. Step 5: Solve for x
    x = 1,138,525,761,611.04/1,092,407.80
  6. Step 6: Final answer
    x = 1,042,216.80

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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.