Home / 867,066.40-1,299,724.80-394,091.20

Finding the Fourth Proportional to 867,066.40, 1,299,724.80 and 394,091.20

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Solution

The fourth proportional to 867,066.40, 1,299,724.80 and 394,091.20 is: 590,739.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,066.40 : 1,299,724.80 = 394,091.20 : x
  2. Step 2: Convert to fraction form
    867,066.40/1,299,724.80 = 394,091.20/x
  3. Step 3: Cross multiply
    867,066.40x = 1,299,724.80 × 394,091.20
  4. Step 4: Simplify right side
    867,066.40x = 512,210,106,101.76
  5. Step 5: Solve for x
    x = 512,210,106,101.76/867,066.40
  6. Step 6: Final answer
    x = 590,739.19

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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.