Home / 1,915,121.60-2,642,885.97-1,055,712.60

Finding the Fourth Proportional to 1,915,121.60, 2,642,885.97 and 1,055,712.60

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Solution

The fourth proportional to 1,915,121.60, 2,642,885.97 and 1,055,712.60 is: 1,456,893.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915,121.60 : 2,642,885.97 = 1,055,712.60 : x
  2. Step 2: Convert to fraction form
    1,915,121.60/2,642,885.97 = 1,055,712.60/x
  3. Step 3: Cross multiply
    1,915,121.60x = 2,642,885.97 × 1,055,712.60
  4. Step 4: Simplify right side
    1,915,121.60x = 2,790,128,018,892.22
  5. Step 5: Solve for x
    x = 2,790,128,018,892.22/1,915,121.60
  6. Step 6: Final answer
    x = 1,456,893.40

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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.