Home / 1,386,409.82-2,079,860.43-628,220.66

Finding the Fourth Proportional to 1,386,409.82, 2,079,860.43 and 628,220.66

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Solution

The fourth proportional to 1,386,409.82, 2,079,860.43 and 628,220.66 is: 942,442.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,409.82 : 2,079,860.43 = 628,220.66 : x
  2. Step 2: Convert to fraction form
    1,386,409.82/2,079,860.43 = 628,220.66/x
  3. Step 3: Cross multiply
    1,386,409.82x = 2,079,860.43 × 628,220.66
  4. Step 4: Simplify right side
    1,386,409.82x = 1,306,611,292,042.48
  5. Step 5: Solve for x
    x = 1,306,611,292,042.48/1,386,409.82
  6. Step 6: Final answer
    x = 942,442.32

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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.