Home / 1,314,258.34-1,970,906.07-640,137.46

Finding the Fourth Proportional to 1,314,258.34, 1,970,906.07 and 640,137.46

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Solution

The fourth proportional to 1,314,258.34, 1,970,906.07 and 640,137.46 is: 959,971.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314,258.34 : 1,970,906.07 = 640,137.46 : x
  2. Step 2: Convert to fraction form
    1,314,258.34/1,970,906.07 = 640,137.46/x
  3. Step 3: Cross multiply
    1,314,258.34x = 1,970,906.07 × 640,137.46
  4. Step 4: Simplify right side
    1,314,258.34x = 1,261,650,805,548.38
  5. Step 5: Solve for x
    x = 1,261,650,805,548.38/1,314,258.34
  6. Step 6: Final answer
    x = 959,971.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.