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Finding the Fourth Proportional to 639,474.48, 882,364.32 and 367,478.64

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Solution

The fourth proportional to 639,474.48, 882,364.32 and 367,478.64 is: 507,057.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,474.48 : 882,364.32 = 367,478.64 : x
  2. Step 2: Convert to fraction form
    639,474.48/882,364.32 = 367,478.64/x
  3. Step 3: Cross multiply
    639,474.48x = 882,364.32 × 367,478.64
  4. Step 4: Simplify right side
    639,474.48x = 324,250,040,298.13
  5. Step 5: Solve for x
    x = 324,250,040,298.13/639,474.48
  6. Step 6: Final answer
    x = 507,057.05

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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.