Home / 985,606.87-1,477,856.73-311,857.78

Finding the Fourth Proportional to 985,606.87, 1,477,856.73 and 311,857.78

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Solution

The fourth proportional to 985,606.87, 1,477,856.73 and 311,857.78 is: 467,611.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,606.87 : 1,477,856.73 = 311,857.78 : x
  2. Step 2: Convert to fraction form
    985,606.87/1,477,856.73 = 311,857.78/x
  3. Step 3: Cross multiply
    985,606.87x = 1,477,856.73 × 311,857.78
  4. Step 4: Simplify right side
    985,606.87x = 460,881,118,975.86
  5. Step 5: Solve for x
    x = 460,881,118,975.86/985,606.87
  6. Step 6: Final answer
    x = 467,611.51

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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.