Home / 1,207,212.89-1,665,953.28-663,383.75

Finding the Fourth Proportional to 1,207,212.89, 1,665,953.28 and 663,383.75

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Solution

The fourth proportional to 1,207,212.89, 1,665,953.28 and 663,383.75 is: 915,469.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,212.89 : 1,665,953.28 = 663,383.75 : x
  2. Step 2: Convert to fraction form
    1,207,212.89/1,665,953.28 = 663,383.75/x
  3. Step 3: Cross multiply
    1,207,212.89x = 1,665,953.28 × 663,383.75
  4. Step 4: Simplify right side
    1,207,212.89x = 1,105,166,325,881.43
  5. Step 5: Solve for x
    x = 1,105,166,325,881.43/1,207,212.89
  6. Step 6: Final answer
    x = 915,469.29

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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.