Home / 1,311,675.69-1,810,241.55-767,778.51

Finding the Fourth Proportional to 1,311,675.69, 1,810,241.55 and 767,778.51

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Solution

The fourth proportional to 1,311,675.69, 1,810,241.55 and 767,778.51 is: 1,059,609.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,675.69 : 1,810,241.55 = 767,778.51 : x
  2. Step 2: Convert to fraction form
    1,311,675.69/1,810,241.55 = 767,778.51/x
  3. Step 3: Cross multiply
    1,311,675.69x = 1,810,241.55 × 767,778.51
  4. Step 4: Simplify right side
    1,311,675.69x = 1,389,864,559,999.09
  5. Step 5: Solve for x
    x = 1,389,864,559,999.09/1,311,675.69
  6. Step 6: Final answer
    x = 1,059,609.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.