Home / 685,718.28-1,028,645.04-236,380.02

Finding the Fourth Proportional to 685,718.28, 1,028,645.04 and 236,380.02

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Solution

The fourth proportional to 685,718.28, 1,028,645.04 and 236,380.02 is: 354,593.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,718.28 : 1,028,645.04 = 236,380.02 : x
  2. Step 2: Convert to fraction form
    685,718.28/1,028,645.04 = 236,380.02/x
  3. Step 3: Cross multiply
    685,718.28x = 1,028,645.04 × 236,380.02
  4. Step 4: Simplify right side
    685,718.28x = 243,151,135,128.10
  5. Step 5: Solve for x
    x = 243,151,135,128.10/685,718.28
  6. Step 6: Final answer
    x = 354,593.34

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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.