Home / 1,190,489.28-1,642,887.28-646,635.72

Finding the Fourth Proportional to 1,190,489.28, 1,642,887.28 and 646,635.72

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Solution

The fourth proportional to 1,190,489.28, 1,642,887.28 and 646,635.72 is: 892,363.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,489.28 : 1,642,887.28 = 646,635.72 : x
  2. Step 2: Convert to fraction form
    1,190,489.28/1,642,887.28 = 646,635.72/x
  3. Step 3: Cross multiply
    1,190,489.28x = 1,642,887.28 × 646,635.72
  4. Step 4: Simplify right side
    1,190,489.28x = 1,062,349,599,181.64
  5. Step 5: Solve for x
    x = 1,062,349,599,181.64/1,190,489.28
  6. Step 6: Final answer
    x = 892,363.85

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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.