Home / 3,818,143.20-5,727,085.20-978,283.20

Finding the Fourth Proportional to 3,818,143.20, 5,727,085.20 and 978,283.20

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Solution

The fourth proportional to 3,818,143.20, 5,727,085.20 and 978,283.20 is: 1,467,391.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,818,143.20 : 5,727,085.20 = 978,283.20 : x
  2. Step 2: Convert to fraction form
    3,818,143.20/5,727,085.20 = 978,283.20/x
  3. Step 3: Cross multiply
    3,818,143.20x = 5,727,085.20 × 978,283.20
  4. Step 4: Simplify right side
    3,818,143.20x = 5,602,711,236,128.64
  5. Step 5: Solve for x
    x = 5,602,711,236,128.64/3,818,143.20
  6. Step 6: Final answer
    x = 1,467,391.59

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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.