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Finding the Fourth Proportional to 432,815.20, 649,222.80 and 432,815.20

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Solution

The fourth proportional to 432,815.20, 649,222.80 and 432,815.20 is: 649,222.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,815.20 : 649,222.80 = 432,815.20 : x
  2. Step 2: Convert to fraction form
    432,815.20/649,222.80 = 432,815.20/x
  3. Step 3: Cross multiply
    432,815.20x = 649,222.80 × 432,815.20
  4. Step 4: Simplify right side
    432,815.20x = 280,993,496,026.56
  5. Step 5: Solve for x
    x = 280,993,496,026.56/432,815.20
  6. Step 6: Final answer
    x = 649,222.80

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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.