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Finding the Fourth Proportional to 675,736.80, 932,504.88 and 389,256

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Solution

The fourth proportional to 675,736.80, 932,504.88 and 389,256 is: 537,166.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,736.80 : 932,504.88 = 389,256 : x
  2. Step 2: Convert to fraction form
    675,736.80/932,504.88 = 389,256/x
  3. Step 3: Cross multiply
    675,736.80x = 932,504.88 × 389,256
  4. Step 4: Simplify right side
    675,736.80x = 362,983,119,569.28
  5. Step 5: Solve for x
    x = 362,983,119,569.28/675,736.80
  6. Step 6: Final answer
    x = 537,166.42

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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.