Home / 705,428.80-1,058,143.20-206,792.80

Finding the Fourth Proportional to 705,428.80, 1,058,143.20 and 206,792.80

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Solution

The fourth proportional to 705,428.80, 1,058,143.20 and 206,792.80 is: 310,189.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,428.80 : 1,058,143.20 = 206,792.80 : x
  2. Step 2: Convert to fraction form
    705,428.80/1,058,143.20 = 206,792.80/x
  3. Step 3: Cross multiply
    705,428.80x = 1,058,143.20 × 206,792.80
  4. Step 4: Simplify right side
    705,428.80x = 218,816,395,128.96
  5. Step 5: Solve for x
    x = 218,816,395,128.96/705,428.80
  6. Step 6: Final answer
    x = 310,189.20

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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.