Home / 685,534.08-1,028,330.56-212,228.16

Finding the Fourth Proportional to 685,534.08, 1,028,330.56 and 212,228.16

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Solution

The fourth proportional to 685,534.08, 1,028,330.56 and 212,228.16 is: 318,351.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,534.08 : 1,028,330.56 = 212,228.16 : x
  2. Step 2: Convert to fraction form
    685,534.08/1,028,330.56 = 212,228.16/x
  3. Step 3: Cross multiply
    685,534.08x = 1,028,330.56 × 212,228.16
  4. Step 4: Simplify right side
    685,534.08x = 218,240,702,620.57
  5. Step 5: Solve for x
    x = 218,240,702,620.57/685,534.08
  6. Step 6: Final answer
    x = 318,351.35

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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.