Home / 685,709.79-1,028,632.32-236,371.50

Finding the Fourth Proportional to 685,709.79, 1,028,632.32 and 236,371.50

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Solution

The fourth proportional to 685,709.79, 1,028,632.32 and 236,371.50 is: 354,580.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,709.79 : 1,028,632.32 = 236,371.50 : x
  2. Step 2: Convert to fraction form
    685,709.79/1,028,632.32 = 236,371.50/x
  3. Step 3: Cross multiply
    685,709.79x = 1,028,632.32 × 236,371.50
  4. Step 4: Simplify right side
    685,709.79x = 243,139,364,426.88
  5. Step 5: Solve for x
    x = 243,139,364,426.88/685,709.79
  6. Step 6: Final answer
    x = 354,580.56

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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.