Home / 988,129.47-1,362,738.56-770,391.75

Finding the Fourth Proportional to 988,129.47, 1,362,738.56 and 770,391.75

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Solution

The fourth proportional to 988,129.47, 1,362,738.56 and 770,391.75 is: 1,062,454.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,129.47 : 1,362,738.56 = 770,391.75 : x
  2. Step 2: Convert to fraction form
    988,129.47/1,362,738.56 = 770,391.75/x
  3. Step 3: Cross multiply
    988,129.47x = 1,362,738.56 × 770,391.75
  4. Step 4: Simplify right side
    988,129.47x = 1,049,842,540,178.92
  5. Step 5: Solve for x
    x = 1,049,842,540,178.92/988,129.47
  6. Step 6: Final answer
    x = 1,062,454.44

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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.