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Finding the Fourth Proportional to 430,620.42, 649,975.36 and 430,620.42

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Solution

The fourth proportional to 430,620.42, 649,975.36 and 430,620.42 is: 649,975.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,620.42 : 649,975.36 = 430,620.42 : x
  2. Step 2: Convert to fraction form
    430,620.42/649,975.36 = 430,620.42/x
  3. Step 3: Cross multiply
    430,620.42x = 649,975.36 × 430,620.42
  4. Step 4: Simplify right side
    430,620.42x = 279,892,662,512.85
  5. Step 5: Solve for x
    x = 279,892,662,512.85/430,620.42
  6. Step 6: Final answer
    x = 649,975.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.