Home / 720,108.37-1,079,912.41-400,747.59

Finding the Fourth Proportional to 720,108.37, 1,079,912.41 and 400,747.59

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Solution

The fourth proportional to 720,108.37, 1,079,912.41 and 400,747.59 is: 600,982.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,108.37 : 1,079,912.41 = 400,747.59 : x
  2. Step 2: Convert to fraction form
    720,108.37/1,079,912.41 = 400,747.59/x
  3. Step 3: Cross multiply
    720,108.37x = 1,079,912.41 × 400,747.59
  4. Step 4: Simplify right side
    720,108.37x = 432,772,300,269.20
  5. Step 5: Solve for x
    x = 432,772,300,269.20/720,108.37
  6. Step 6: Final answer
    x = 600,982.19

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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.