Home / 1,521,284.53-2,100,794.93-978,363.04

Finding the Fourth Proportional to 1,521,284.53, 2,100,794.93 and 978,363.04

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Solution

The fourth proportional to 1,521,284.53, 2,100,794.93 and 978,363.04 is: 1,351,055.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521,284.53 : 2,100,794.93 = 978,363.04 : x
  2. Step 2: Convert to fraction form
    1,521,284.53/2,100,794.93 = 978,363.04/x
  3. Step 3: Cross multiply
    1,521,284.53x = 2,100,794.93 × 978,363.04
  4. Step 4: Simplify right side
    1,521,284.53x = 2,055,340,114,131.39
  5. Step 5: Solve for x
    x = 2,055,340,114,131.39/1,521,284.53
  6. Step 6: Final answer
    x = 1,351,055.69

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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.