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Finding the Fourth Proportional to 451,661.18, 678,333.91 and 397,645.02

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Solution

The fourth proportional to 451,661.18, 678,333.91 and 397,645.02 is: 597,208.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,661.18 : 678,333.91 = 397,645.02 : x
  2. Step 2: Convert to fraction form
    451,661.18/678,333.91 = 397,645.02/x
  3. Step 3: Cross multiply
    451,661.18x = 678,333.91 × 397,645.02
  4. Step 4: Simplify right side
    451,661.18x = 269,736,101,208.63
  5. Step 5: Solve for x
    x = 269,736,101,208.63/451,661.18
  6. Step 6: Final answer
    x = 597,208.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.