Home / 1,243,821.36-1,865,725.89-485,739.81

Finding the Fourth Proportional to 1,243,821.36, 1,865,725.89 and 485,739.81

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Solution

The fourth proportional to 1,243,821.36, 1,865,725.89 and 485,739.81 is: 728,607.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,821.36 : 1,865,725.89 = 485,739.81 : x
  2. Step 2: Convert to fraction form
    1,243,821.36/1,865,725.89 = 485,739.81/x
  3. Step 3: Cross multiply
    1,243,821.36x = 1,865,725.89 × 485,739.81
  4. Step 4: Simplify right side
    1,243,821.36x = 906,257,339,320.68
  5. Step 5: Solve for x
    x = 906,257,339,320.68/1,243,821.36
  6. Step 6: Final answer
    x = 728,607.31

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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.