Home / 1,521,154.27-2,100,615.42-978,232.96

Finding the Fourth Proportional to 1,521,154.27, 2,100,615.42 and 978,232.96

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Solution

The fourth proportional to 1,521,154.27, 2,100,615.42 and 978,232.96 is: 1,350,876.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521,154.27 : 2,100,615.42 = 978,232.96 : x
  2. Step 2: Convert to fraction form
    1,521,154.27/2,100,615.42 = 978,232.96/x
  3. Step 3: Cross multiply
    1,521,154.27x = 2,100,615.42 × 978,232.96
  4. Step 4: Simplify right side
    1,521,154.27x = 2,054,891,240,128.24
  5. Step 5: Solve for x
    x = 2,054,891,240,128.24/1,521,154.27
  6. Step 6: Final answer
    x = 1,350,876.29

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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.