Home / 821,964.81-1,231,864.64-348,063.78

Finding the Fourth Proportional to 821,964.81, 1,231,864.64 and 348,063.78

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Solution

The fourth proportional to 821,964.81, 1,231,864.64 and 348,063.78 is: 521,637.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,964.81 : 1,231,864.64 = 348,063.78 : x
  2. Step 2: Convert to fraction form
    821,964.81/1,231,864.64 = 348,063.78/x
  3. Step 3: Cross multiply
    821,964.81x = 1,231,864.64 × 348,063.78
  4. Step 4: Simplify right side
    821,964.81x = 428,767,467,231.15
  5. Step 5: Solve for x
    x = 428,767,467,231.15/821,964.81
  6. Step 6: Final answer
    x = 521,637.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.