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Finding the Fourth Proportional to 451,339.74, 672,974.52 and 438,939.45

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Solution

The fourth proportional to 451,339.74, 672,974.52 and 438,939.45 is: 654,484.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,339.74 : 672,974.52 = 438,939.45 : x
  2. Step 2: Convert to fraction form
    451,339.74/672,974.52 = 438,939.45/x
  3. Step 3: Cross multiply
    451,339.74x = 672,974.52 × 438,939.45
  4. Step 4: Simplify right side
    451,339.74x = 295,395,066,257.90
  5. Step 5: Solve for x
    x = 295,395,066,257.90/451,339.74
  6. Step 6: Final answer
    x = 654,484.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.