Home / 1,138,838.57-1,571,837.51-947,665.61

Finding the Fourth Proportional to 1,138,838.57, 1,571,837.51 and 947,665.61

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Solution

The fourth proportional to 1,138,838.57, 1,571,837.51 and 947,665.61 is: 1,307,978.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,838.57 : 1,571,837.51 = 947,665.61 : x
  2. Step 2: Convert to fraction form
    1,138,838.57/1,571,837.51 = 947,665.61/x
  3. Step 3: Cross multiply
    1,138,838.57x = 1,571,837.51 × 947,665.61
  4. Step 4: Simplify right side
    1,138,838.57x = 1,489,576,347,996.70
  5. Step 5: Solve for x
    x = 1,489,576,347,996.70/1,138,838.57
  6. Step 6: Final answer
    x = 1,307,978.49

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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.