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Finding the Fourth Proportional to 667,272.44, 920,831.38 and 361,341.82

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Solution

The fourth proportional to 667,272.44, 920,831.38 and 361,341.82 is: 498,649.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,272.44 : 920,831.38 = 361,341.82 : x
  2. Step 2: Convert to fraction form
    667,272.44/920,831.38 = 361,341.82/x
  3. Step 3: Cross multiply
    667,272.44x = 920,831.38 × 361,341.82
  4. Step 4: Simplify right side
    667,272.44x = 332,734,889,341.18
  5. Step 5: Solve for x
    x = 332,734,889,341.18/667,272.44
  6. Step 6: Final answer
    x = 498,649.23

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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.