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Finding the Fourth Proportional to 839,109.70, 1,259,101.95 and 365,842.90

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Solution

The fourth proportional to 839,109.70, 1,259,101.95 and 365,842.90 is: 548,955.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,109.70 : 1,259,101.95 = 365,842.90 : x
  2. Step 2: Convert to fraction form
    839,109.70/1,259,101.95 = 365,842.90/x
  3. Step 3: Cross multiply
    839,109.70x = 1,259,101.95 × 365,842.90
  4. Step 4: Simplify right side
    839,109.70x = 460,633,508,783.66
  5. Step 5: Solve for x
    x = 460,633,508,783.66/839,109.70
  6. Step 6: Final answer
    x = 548,955.05

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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.