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Finding the Fourth Proportional to 451,402.20, 622,424.52 and 287,840.52

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Solution

The fourth proportional to 451,402.20, 622,424.52 and 287,840.52 is: 396,894.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,402.20 : 622,424.52 = 287,840.52 : x
  2. Step 2: Convert to fraction form
    451,402.20/622,424.52 = 287,840.52/x
  3. Step 3: Cross multiply
    451,402.20x = 622,424.52 × 287,840.52
  4. Step 4: Simplify right side
    451,402.20x = 179,158,997,497.55
  5. Step 5: Solve for x
    x = 179,158,997,497.55/451,402.20
  6. Step 6: Final answer
    x = 396,894.38

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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.