Home / 1,320,019.28-1,821,627.56-716,407.28

Finding the Fourth Proportional to 1,320,019.28, 1,821,627.56 and 716,407.28

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Solution

The fourth proportional to 1,320,019.28, 1,821,627.56 and 716,407.28 is: 988,642.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,019.28 : 1,821,627.56 = 716,407.28 : x
  2. Step 2: Convert to fraction form
    1,320,019.28/1,821,627.56 = 716,407.28/x
  3. Step 3: Cross multiply
    1,320,019.28x = 1,821,627.56 × 716,407.28
  4. Step 4: Simplify right side
    1,320,019.28x = 1,305,027,245,432.64
  5. Step 5: Solve for x
    x = 1,305,027,245,432.64/1,320,019.28
  6. Step 6: Final answer
    x = 988,642.56

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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.