Home / 1,220,933.76-1,684,995.12-711,625.20

Finding the Fourth Proportional to 1,220,933.76, 1,684,995.12 and 711,625.20

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Solution

The fourth proportional to 1,220,933.76, 1,684,995.12 and 711,625.20 is: 982,104.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,933.76 : 1,684,995.12 = 711,625.20 : x
  2. Step 2: Convert to fraction form
    1,220,933.76/1,684,995.12 = 711,625.20/x
  3. Step 3: Cross multiply
    1,220,933.76x = 1,684,995.12 × 711,625.20
  4. Step 4: Simplify right side
    1,220,933.76x = 1,199,084,989,269.02
  5. Step 5: Solve for x
    x = 1,199,084,989,269.02/1,220,933.76
  6. Step 6: Final answer
    x = 982,104.87

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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.