Home / 1,220,918.76-1,684,974.42-711,610.20

Finding the Fourth Proportional to 1,220,918.76, 1,684,974.42 and 711,610.20

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Solution

The fourth proportional to 1,220,918.76, 1,684,974.42 and 711,610.20 is: 982,084.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,918.76 : 1,684,974.42 = 711,610.20 : x
  2. Step 2: Convert to fraction form
    1,220,918.76/1,684,974.42 = 711,610.20/x
  3. Step 3: Cross multiply
    1,220,918.76x = 1,684,974.42 × 711,610.20
  4. Step 4: Simplify right side
    1,220,918.76x = 1,199,044,984,011.08
  5. Step 5: Solve for x
    x = 1,199,044,984,011.08/1,220,918.76
  6. Step 6: Final answer
    x = 982,084.17

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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.