Home / 821,971.16-1,233,056.36-289,383.20

Finding the Fourth Proportional to 821,971.16, 1,233,056.36 and 289,383.20

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Solution

The fourth proportional to 821,971.16, 1,233,056.36 and 289,383.20 is: 434,109.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,971.16 : 1,233,056.36 = 289,383.20 : x
  2. Step 2: Convert to fraction form
    821,971.16/1,233,056.36 = 289,383.20/x
  3. Step 3: Cross multiply
    821,971.16x = 1,233,056.36 × 289,383.20
  4. Step 4: Simplify right side
    821,971.16x = 356,825,795,237.15
  5. Step 5: Solve for x
    x = 356,825,795,237.15/821,971.16
  6. Step 6: Final answer
    x = 434,109.87

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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.