Home / 1,521,124.30-2,100,573.96-978,202.90

Finding the Fourth Proportional to 1,521,124.30, 2,100,573.96 and 978,202.90

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Solution

The fourth proportional to 1,521,124.30, 2,100,573.96 and 978,202.90 is: 1,350,834.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521,124.30 : 2,100,573.96 = 978,202.90 : x
  2. Step 2: Convert to fraction form
    1,521,124.30/2,100,573.96 = 978,202.90/x
  3. Step 3: Cross multiply
    1,521,124.30x = 2,100,573.96 × 978,202.90
  4. Step 4: Simplify right side
    1,521,124.30x = 2,054,787,539,336.48
  5. Step 5: Solve for x
    x = 2,054,787,539,336.48/1,521,124.30
  6. Step 6: Final answer
    x = 1,350,834.73

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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.