Home / 1,086,378.36-1,629,379.62-287,671.38

Finding the Fourth Proportional to 1,086,378.36, 1,629,379.62 and 287,671.38

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Solution

The fourth proportional to 1,086,378.36, 1,629,379.62 and 287,671.38 is: 431,457.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,378.36 : 1,629,379.62 = 287,671.38 : x
  2. Step 2: Convert to fraction form
    1,086,378.36/1,629,379.62 = 287,671.38/x
  3. Step 3: Cross multiply
    1,086,378.36x = 1,629,379.62 × 287,671.38
  4. Step 4: Simplify right side
    1,086,378.36x = 468,725,883,829.28
  5. Step 5: Solve for x
    x = 468,725,883,829.28/1,086,378.36
  6. Step 6: Final answer
    x = 431,457.31

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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.