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Finding the Fourth Proportional to 444,977.80, 667,466.70 and 426,315.40

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Solution

The fourth proportional to 444,977.80, 667,466.70 and 426,315.40 is: 639,473.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,977.80 : 667,466.70 = 426,315.40 : x
  2. Step 2: Convert to fraction form
    444,977.80/667,466.70 = 426,315.40/x
  3. Step 3: Cross multiply
    444,977.80x = 667,466.70 × 426,315.40
  4. Step 4: Simplify right side
    444,977.80x = 284,551,333,197.18
  5. Step 5: Solve for x
    x = 284,551,333,197.18/444,977.80
  6. Step 6: Final answer
    x = 639,473.10

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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.