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Finding the Fourth Proportional to 469,998.72, 648,608.49 and 286,245.96

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Solution

The fourth proportional to 469,998.72, 648,608.49 and 286,245.96 is: 395,025.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,998.72 : 648,608.49 = 286,245.96 : x
  2. Step 2: Convert to fraction form
    469,998.72/648,608.49 = 286,245.96/x
  3. Step 3: Cross multiply
    469,998.72x = 648,608.49 × 286,245.96
  4. Step 4: Simplify right side
    469,998.72x = 185,661,559,884.20
  5. Step 5: Solve for x
    x = 185,661,559,884.20/469,998.72
  6. Step 6: Final answer
    x = 395,025.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.