Home / 672,660.82-928,271.34-386,198.38

Finding the Fourth Proportional to 672,660.82, 928,271.34 and 386,198.38

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Solution

The fourth proportional to 672,660.82, 928,271.34 and 386,198.38 is: 532,953.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,660.82 : 928,271.34 = 386,198.38 : x
  2. Step 2: Convert to fraction form
    672,660.82/928,271.34 = 386,198.38/x
  3. Step 3: Cross multiply
    672,660.82x = 928,271.34 × 386,198.38
  4. Step 4: Simplify right side
    672,660.82x = 358,496,887,708.43
  5. Step 5: Solve for x
    x = 358,496,887,708.43/672,660.82
  6. Step 6: Final answer
    x = 532,953.42

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Double scale
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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.