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Finding the Fourth Proportional to 451,335.78, 622,907.25 and 279,309.15

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Solution

The fourth proportional to 451,335.78, 622,907.25 and 279,309.15 is: 385,486.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,335.78 : 622,907.25 = 279,309.15 : x
  2. Step 2: Convert to fraction form
    451,335.78/622,907.25 = 279,309.15/x
  3. Step 3: Cross multiply
    451,335.78x = 622,907.25 × 279,309.15
  4. Step 4: Simplify right side
    451,335.78x = 173,983,694,526.34
  5. Step 5: Solve for x
    x = 173,983,694,526.34/451,335.78
  6. Step 6: Final answer
    x = 385,486.16

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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.