Home / 479,026.86-661,066.64-309,556.23

Finding the Fourth Proportional to 479,026.86, 661,066.64 and 309,556.23

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Solution

The fourth proportional to 479,026.86, 661,066.64 and 309,556.23 is: 427,193.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,026.86 : 661,066.64 = 309,556.23 : x
  2. Step 2: Convert to fraction form
    479,026.86/661,066.64 = 309,556.23/x
  3. Step 3: Cross multiply
    479,026.86x = 661,066.64 × 309,556.23
  4. Step 4: Simplify right side
    479,026.86x = 204,637,292,004.05
  5. Step 5: Solve for x
    x = 204,637,292,004.05/479,026.86
  6. Step 6: Final answer
    x = 427,193.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.