Home / 985,190.76-1,477,986.30-311,377.32

Finding the Fourth Proportional to 985,190.76, 1,477,986.30 and 311,377.32

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Solution

The fourth proportional to 985,190.76, 1,477,986.30 and 311,377.32 is: 467,129.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,190.76 : 1,477,986.30 = 311,377.32 : x
  2. Step 2: Convert to fraction form
    985,190.76/1,477,986.30 = 311,377.32/x
  3. Step 3: Cross multiply
    985,190.76x = 1,477,986.30 × 311,377.32
  4. Step 4: Simplify right side
    985,190.76x = 460,211,413,090.72
  5. Step 5: Solve for x
    x = 460,211,413,090.72/985,190.76
  6. Step 6: Final answer
    x = 467,129.24

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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.