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Finding the Fourth Proportional to 675,955.60, 932,863.38 and 389,493.76

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Solution

The fourth proportional to 675,955.60, 932,863.38 and 389,493.76 is: 537,527.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,955.60 : 932,863.38 = 389,493.76 : x
  2. Step 2: Convert to fraction form
    675,955.60/932,863.38 = 389,493.76/x
  3. Step 3: Cross multiply
    675,955.60x = 932,863.38 × 389,493.76
  4. Step 4: Simplify right side
    675,955.60x = 363,344,465,442.51
  5. Step 5: Solve for x
    x = 363,344,465,442.51/675,955.60
  6. Step 6: Final answer
    x = 537,527.12

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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.