Home / 713,789.06-985,111.20-427,309.07

Finding the Fourth Proportional to 713,789.06, 985,111.20 and 427,309.07

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Solution

The fourth proportional to 713,789.06, 985,111.20 and 427,309.07 is: 589,735.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,789.06 : 985,111.20 = 427,309.07 : x
  2. Step 2: Convert to fraction form
    713,789.06/985,111.20 = 427,309.07/x
  3. Step 3: Cross multiply
    713,789.06x = 985,111.20 × 427,309.07
  4. Step 4: Simplify right side
    713,789.06x = 420,946,945,793.03
  5. Step 5: Solve for x
    x = 420,946,945,793.03/713,789.06
  6. Step 6: Final answer
    x = 589,735.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.