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Finding the Fourth Proportional to 447,620.40, 671,430.60 and 442,954.80

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Solution

The fourth proportional to 447,620.40, 671,430.60 and 442,954.80 is: 664,432.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,620.40 : 671,430.60 = 442,954.80 : x
  2. Step 2: Convert to fraction form
    447,620.40/671,430.60 = 442,954.80/x
  3. Step 3: Cross multiply
    447,620.40x = 671,430.60 × 442,954.80
  4. Step 4: Simplify right side
    447,620.40x = 297,413,407,136.88
  5. Step 5: Solve for x
    x = 297,413,407,136.88/447,620.40
  6. Step 6: Final answer
    x = 664,432.20

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1.5x scale

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.