Home / 985,390.90-1,477,959.26-311,540.66

Finding the Fourth Proportional to 985,390.90, 1,477,959.26 and 311,540.66

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Solution

The fourth proportional to 985,390.90, 1,477,959.26 and 311,540.66 is: 467,270.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,390.90 : 1,477,959.26 = 311,540.66 : x
  2. Step 2: Convert to fraction form
    985,390.90/1,477,959.26 = 311,540.66/x
  3. Step 3: Cross multiply
    985,390.90x = 1,477,959.26 × 311,540.66
  4. Step 4: Simplify right side
    985,390.90x = 460,444,403,313.51
  5. Step 5: Solve for x
    x = 460,444,403,313.51/985,390.90
  6. Step 6: Final answer
    x = 467,270.81

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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.