Home / 919,101.92-1,378,662.90-279,509.67

Finding the Fourth Proportional to 919,101.92, 1,378,662.90 and 279,509.67

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Solution

The fourth proportional to 919,101.92, 1,378,662.90 and 279,509.67 is: 419,267.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,101.92 : 1,378,662.90 = 279,509.67 : x
  2. Step 2: Convert to fraction form
    919,101.92/1,378,662.90 = 279,509.67/x
  3. Step 3: Cross multiply
    919,101.92x = 1,378,662.90 × 279,509.67
  4. Step 4: Simplify right side
    919,101.92x = 385,349,612,220.24
  5. Step 5: Solve for x
    x = 385,349,612,220.24/919,101.92
  6. Step 6: Final answer
    x = 419,267.55

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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.