Home / 1,138,837.82-1,571,836.47-947,664.86

Finding the Fourth Proportional to 1,138,837.82, 1,571,836.47 and 947,664.86

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Solution

The fourth proportional to 1,138,837.82, 1,571,836.47 and 947,664.86 is: 1,307,977.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,837.82 : 1,571,836.47 = 947,664.86 : x
  2. Step 2: Convert to fraction form
    1,138,837.82/1,571,836.47 = 947,664.86/x
  3. Step 3: Cross multiply
    1,138,837.82x = 1,571,836.47 × 947,664.86
  4. Step 4: Simplify right side
    1,138,837.82x = 1,489,574,188,285.44
  5. Step 5: Solve for x
    x = 1,489,574,188,285.44/1,138,837.82
  6. Step 6: Final answer
    x = 1,307,977.45

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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.