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Finding the Fourth Proportional to 675,893.12, 932,940.24 and 389,604.64

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Solution

The fourth proportional to 675,893.12, 932,940.24 and 389,604.64 is: 537,774.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,893.12 : 932,940.24 = 389,604.64 : x
  2. Step 2: Convert to fraction form
    675,893.12/932,940.24 = 389,604.64/x
  3. Step 3: Cross multiply
    675,893.12x = 932,940.24 × 389,604.64
  4. Step 4: Simplify right side
    675,893.12x = 363,477,846,346.71
  5. Step 5: Solve for x
    x = 363,477,846,346.71/675,893.12
  6. Step 6: Final answer
    x = 537,774.15

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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.