Home / 867,076.40-1,299,739.80-394,101.20

Finding the Fourth Proportional to 867,076.40, 1,299,739.80 and 394,101.20

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Solution

The fourth proportional to 867,076.40, 1,299,739.80 and 394,101.20 is: 590,754.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,076.40 : 1,299,739.80 = 394,101.20 : x
  2. Step 2: Convert to fraction form
    867,076.40/1,299,739.80 = 394,101.20/x
  3. Step 3: Cross multiply
    867,076.40x = 1,299,739.80 × 394,101.20
  4. Step 4: Simplify right side
    867,076.40x = 512,229,014,867.76
  5. Step 5: Solve for x
    x = 512,229,014,867.76/867,076.40
  6. Step 6: Final answer
    x = 590,754.19

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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.