Home / 7,178,945.80-9,906,945.27-3,915,760.36

Finding the Fourth Proportional to 7,178,945.80, 9,906,945.27 and 3,915,760.36

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Solution

The fourth proportional to 7,178,945.80, 9,906,945.27 and 3,915,760.36 is: 5,403,749.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,178,945.80 : 9,906,945.27 = 3,915,760.36 : x
  2. Step 2: Convert to fraction form
    7,178,945.80/9,906,945.27 = 3,915,760.36/x
  3. Step 3: Cross multiply
    7,178,945.80x = 9,906,945.27 × 3,915,760.36
  4. Step 4: Simplify right side
    7,178,945.80x = 38,793,223,576,955.49
  5. Step 5: Solve for x
    x = 38,793,223,576,955.49/7,178,945.80
  6. Step 6: Final answer
    x = 5,403,749.33

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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.