Home / 839,922.70-1,259,884.05-485,628.70

Finding the Fourth Proportional to 839,922.70, 1,259,884.05 and 485,628.70

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Solution

The fourth proportional to 839,922.70, 1,259,884.05 and 485,628.70 is: 728,443.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,922.70 : 1,259,884.05 = 485,628.70 : x
  2. Step 2: Convert to fraction form
    839,922.70/1,259,884.05 = 485,628.70/x
  3. Step 3: Cross multiply
    839,922.70x = 1,259,884.05 × 485,628.70
  4. Step 4: Simplify right side
    839,922.70x = 611,835,853,352.24
  5. Step 5: Solve for x
    x = 611,835,853,352.24/839,922.70
  6. Step 6: Final answer
    x = 728,443.05

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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.