Home / 2,815,881.28-4,223,771.70-685,960.36

Finding the Fourth Proportional to 2,815,881.28, 4,223,771.70 and 685,960.36

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Solution

The fourth proportional to 2,815,881.28, 4,223,771.70 and 685,960.36 is: 1,028,928.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815,881.28 : 4,223,771.70 = 685,960.36 : x
  2. Step 2: Convert to fraction form
    2,815,881.28/4,223,771.70 = 685,960.36/x
  3. Step 3: Cross multiply
    2,815,881.28x = 4,223,771.70 × 685,960.36
  4. Step 4: Simplify right side
    2,815,881.28x = 2,897,339,955,889.81
  5. Step 5: Solve for x
    x = 2,897,339,955,889.81/2,815,881.28
  6. Step 6: Final answer
    x = 1,028,928.31

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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.