Home / 2,115,937.59-2,920,887.64-1,428,540.44

Finding the Fourth Proportional to 2,115,937.59, 2,920,887.64 and 1,428,540.44

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Solution

The fourth proportional to 2,115,937.59, 2,920,887.64 and 1,428,540.44 is: 1,971,989.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115,937.59 : 2,920,887.64 = 1,428,540.44 : x
  2. Step 2: Convert to fraction form
    2,115,937.59/2,920,887.64 = 1,428,540.44/x
  3. Step 3: Cross multiply
    2,115,937.59x = 2,920,887.64 × 1,428,540.44
  4. Step 4: Simplify right side
    2,115,937.59x = 4,172,606,101,617.40
  5. Step 5: Solve for x
    x = 4,172,606,101,617.40/2,115,937.59
  6. Step 6: Final answer
    x = 1,971,989.22

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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.