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Finding the Fourth Proportional to 839,625.66, 1,259,625.60 and 307,134.90

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Solution

The fourth proportional to 839,625.66, 1,259,625.60 and 307,134.90 is: 460,770.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,625.66 : 1,259,625.60 = 307,134.90 : x
  2. Step 2: Convert to fraction form
    839,625.66/1,259,625.60 = 307,134.90/x
  3. Step 3: Cross multiply
    839,625.66x = 1,259,625.60 × 307,134.90
  4. Step 4: Simplify right side
    839,625.66x = 386,874,982,693.44
  5. Step 5: Solve for x
    x = 386,874,982,693.44/839,625.66
  6. Step 6: Final answer
    x = 460,770.79

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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.