Home / 685,309.01-1,026,839.90-485,270.28

Finding the Fourth Proportional to 685,309.01, 1,026,839.90 and 485,270.28

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Solution

The fourth proportional to 685,309.01, 1,026,839.90 and 485,270.28 is: 727,109.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,309.01 : 1,026,839.90 = 485,270.28 : x
  2. Step 2: Convert to fraction form
    685,309.01/1,026,839.90 = 485,270.28/x
  3. Step 3: Cross multiply
    685,309.01x = 1,026,839.90 × 485,270.28
  4. Step 4: Simplify right side
    685,309.01x = 498,294,883,361.82
  5. Step 5: Solve for x
    x = 498,294,883,361.82/685,309.01
  6. Step 6: Final answer
    x = 727,109.79

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1.5x scale

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.