Home / 2,115,919.39-2,920,862.54-1,428,522.28

Finding the Fourth Proportional to 2,115,919.39, 2,920,862.54 and 1,428,522.28

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Solution

The fourth proportional to 2,115,919.39, 2,920,862.54 and 1,428,522.28 is: 1,971,964.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115,919.39 : 2,920,862.54 = 1,428,522.28 : x
  2. Step 2: Convert to fraction form
    2,115,919.39/2,920,862.54 = 1,428,522.28/x
  3. Step 3: Cross multiply
    2,115,919.39x = 2,920,862.54 × 1,428,522.28
  4. Step 4: Simplify right side
    2,115,919.39x = 4,172,517,215,207.39
  5. Step 5: Solve for x
    x = 4,172,517,215,207.39/2,115,919.39
  6. Step 6: Final answer
    x = 1,971,964.17

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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.