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Finding the Fourth Proportional to 432,006.80, 605,431.60 and 432,006.80

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Solution

The fourth proportional to 432,006.80, 605,431.60 and 432,006.80 is: 605,431.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,006.80 : 605,431.60 = 432,006.80 : x
  2. Step 2: Convert to fraction form
    432,006.80/605,431.60 = 432,006.80/x
  3. Step 3: Cross multiply
    432,006.80x = 605,431.60 × 432,006.80
  4. Step 4: Simplify right side
    432,006.80x = 261,550,568,134.88
  5. Step 5: Solve for x
    x = 261,550,568,134.88/432,006.80
  6. Step 6: Final answer
    x = 605,431.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.