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Finding the Fourth Proportional to 639,396.42, 882,235.35 and 367,411.77

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Solution

The fourth proportional to 639,396.42, 882,235.35 and 367,411.77 is: 506,952.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,396.42 : 882,235.35 = 367,411.77 : x
  2. Step 2: Convert to fraction form
    639,396.42/882,235.35 = 367,411.77/x
  3. Step 3: Cross multiply
    639,396.42x = 882,235.35 × 367,411.77
  4. Step 4: Simplify right side
    639,396.42x = 324,143,649,663.01
  5. Step 5: Solve for x
    x = 324,143,649,663.01/639,396.42
  6. Step 6: Final answer
    x = 506,952.56

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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.