Home / 1,389,219.40-2,084,520.30-790,640.20

Finding the Fourth Proportional to 1,389,219.40, 2,084,520.30 and 790,640.20

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Solution

The fourth proportional to 1,389,219.40, 2,084,520.30 and 790,640.20 is: 1,186,353.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,219.40 : 2,084,520.30 = 790,640.20 : x
  2. Step 2: Convert to fraction form
    1,389,219.40/2,084,520.30 = 790,640.20/x
  3. Step 3: Cross multiply
    1,389,219.40x = 2,084,520.30 × 790,640.20
  4. Step 4: Simplify right side
    1,389,219.40x = 1,648,105,546,896.06
  5. Step 5: Solve for x
    x = 1,648,105,546,896.06/1,389,219.40
  6. Step 6: Final answer
    x = 1,186,353.68

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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.