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Finding the Fourth Proportional to 839,109.20, 1,259,101.20 and 365,842.40

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Solution

The fourth proportional to 839,109.20, 1,259,101.20 and 365,842.40 is: 548,954.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,109.20 : 1,259,101.20 = 365,842.40 : x
  2. Step 2: Convert to fraction form
    839,109.20/1,259,101.20 = 365,842.40/x
  3. Step 3: Cross multiply
    839,109.20x = 1,259,101.20 × 365,842.40
  4. Step 4: Simplify right side
    839,109.20x = 460,632,604,850.88
  5. Step 5: Solve for x
    x = 460,632,604,850.88/839,109.20
  6. Step 6: Final answer
    x = 548,954.30

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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.