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Finding the Fourth Proportional to 447,622.40, 671,433.60 and 425,849.60

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Solution

The fourth proportional to 447,622.40, 671,433.60 and 425,849.60 is: 638,774.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,622.40 : 671,433.60 = 425,849.60 : x
  2. Step 2: Convert to fraction form
    447,622.40/671,433.60 = 425,849.60/x
  3. Step 3: Cross multiply
    447,622.40x = 671,433.60 × 425,849.60
  4. Step 4: Simplify right side
    447,622.40x = 285,929,729,986.56
  5. Step 5: Solve for x
    x = 285,929,729,986.56/447,622.40
  6. Step 6: Final answer
    x = 638,774.40

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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.