Home / 786,329.49-1,179,741.82-280,879.28

Finding the Fourth Proportional to 786,329.49, 1,179,741.82 and 280,879.28

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Solution

The fourth proportional to 786,329.49, 1,179,741.82 and 280,879.28 is: 421,407.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,329.49 : 1,179,741.82 = 280,879.28 : x
  2. Step 2: Convert to fraction form
    786,329.49/1,179,741.82 = 280,879.28/x
  3. Step 3: Cross multiply
    786,329.49x = 1,179,741.82 × 280,879.28
  4. Step 4: Simplify right side
    786,329.49x = 331,365,037,973.31
  5. Step 5: Solve for x
    x = 331,365,037,973.31/786,329.49
  6. Step 6: Final answer
    x = 421,407.36

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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.