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Finding the Fourth Proportional to 893,661.15, 1,233,260.64 and 485,763.94

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Solution

The fourth proportional to 893,661.15, 1,233,260.64 and 485,763.94 is: 670,358.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,661.15 : 1,233,260.64 = 485,763.94 : x
  2. Step 2: Convert to fraction form
    893,661.15/1,233,260.64 = 485,763.94/x
  3. Step 3: Cross multiply
    893,661.15x = 1,233,260.64 × 485,763.94
  4. Step 4: Simplify right side
    893,661.15x = 599,073,542,137.81
  5. Step 5: Solve for x
    x = 599,073,542,137.81/893,661.15
  6. Step 6: Final answer
    x = 670,358.71

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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.