Home / 675,918.12-932,974.86-389,629.56

Finding the Fourth Proportional to 675,918.12, 932,974.86 and 389,629.56

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Solution

The fourth proportional to 675,918.12, 932,974.86 and 389,629.56 is: 537,808.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,918.12 : 932,974.86 = 389,629.56 : x
  2. Step 2: Convert to fraction form
    675,918.12/932,974.86 = 389,629.56/x
  3. Step 3: Cross multiply
    675,918.12x = 932,974.86 × 389,629.56
  4. Step 4: Simplify right side
    675,918.12x = 363,514,584,192.86
  5. Step 5: Solve for x
    x = 363,514,584,192.86/675,918.12
  6. Step 6: Final answer
    x = 537,808.61

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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.