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Finding the Fourth Proportional to 455,521.40, 628,571.80 and 264,497.48

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Solution

The fourth proportional to 455,521.40, 628,571.80 and 264,497.48 is: 364,978.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,521.40 : 628,571.80 = 264,497.48 : x
  2. Step 2: Convert to fraction form
    455,521.40/628,571.80 = 264,497.48/x
  3. Step 3: Cross multiply
    455,521.40x = 628,571.80 × 264,497.48
  4. Step 4: Simplify right side
    455,521.40x = 166,255,657,099.06
  5. Step 5: Solve for x
    x = 166,255,657,099.06/455,521.40
  6. Step 6: Final answer
    x = 364,978.81

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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.