Home / 776,911.40-1,165,369.80-215,945.36

Finding the Fourth Proportional to 776,911.40, 1,165,369.80 and 215,945.36

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Solution

The fourth proportional to 776,911.40, 1,165,369.80 and 215,945.36 is: 323,918.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,911.40 : 1,165,369.80 = 215,945.36 : x
  2. Step 2: Convert to fraction form
    776,911.40/1,165,369.80 = 215,945.36/x
  3. Step 3: Cross multiply
    776,911.40x = 1,165,369.80 × 215,945.36
  4. Step 4: Simplify right side
    776,911.40x = 251,656,200,994.13
  5. Step 5: Solve for x
    x = 251,656,200,994.13/776,911.40
  6. Step 6: Final answer
    x = 323,918.79

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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.