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Finding the Fourth Proportional to 722,649.44, 997,175.52 and 400,279.56

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Solution

The fourth proportional to 722,649.44, 997,175.52 and 400,279.56 is: 552,341.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,649.44 : 997,175.52 = 400,279.56 : x
  2. Step 2: Convert to fraction form
    722,649.44/997,175.52 = 400,279.56/x
  3. Step 3: Cross multiply
    722,649.44x = 997,175.52 × 400,279.56
  4. Step 4: Simplify right side
    722,649.44x = 399,148,978,388.37
  5. Step 5: Solve for x
    x = 399,148,978,388.37/722,649.44
  6. Step 6: Final answer
    x = 552,341.09

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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.