Home / 874,002.28-1,311,003.42-313,430.44

Finding the Fourth Proportional to 874,002.28, 1,311,003.42 and 313,430.44

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Solution

The fourth proportional to 874,002.28, 1,311,003.42 and 313,430.44 is: 470,145.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,002.28 : 1,311,003.42 = 313,430.44 : x
  2. Step 2: Convert to fraction form
    874,002.28/1,311,003.42 = 313,430.44/x
  3. Step 3: Cross multiply
    874,002.28x = 1,311,003.42 × 313,430.44
  4. Step 4: Simplify right side
    874,002.28x = 410,908,378,772.11
  5. Step 5: Solve for x
    x = 410,908,378,772.11/874,002.28
  6. Step 6: Final answer
    x = 470,145.66

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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.