Home / 1,397,972.20-2,092,292.70-978,068.20

Finding the Fourth Proportional to 1,397,972.20, 2,092,292.70 and 978,068.20

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Solution

The fourth proportional to 1,397,972.20, 2,092,292.70 and 978,068.20 is: 1,463,838.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397,972.20 : 2,092,292.70 = 978,068.20 : x
  2. Step 2: Convert to fraction form
    1,397,972.20/2,092,292.70 = 978,068.20/x
  3. Step 3: Cross multiply
    1,397,972.20x = 2,092,292.70 × 978,068.20
  4. Step 4: Simplify right side
    1,397,972.20x = 2,046,404,954,962.14
  5. Step 5: Solve for x
    x = 2,046,404,954,962.14/1,397,972.20
  6. Step 6: Final answer
    x = 1,463,838.09

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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.