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Finding the Fourth Proportional to 675,859.74, 932,649.39 and 385,428.66

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Solution

The fourth proportional to 675,859.74, 932,649.39 and 385,428.66 is: 531,870.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,859.74 : 932,649.39 = 385,428.66 : x
  2. Step 2: Convert to fraction form
    675,859.74/932,649.39 = 385,428.66/x
  3. Step 3: Cross multiply
    675,859.74x = 932,649.39 × 385,428.66
  4. Step 4: Simplify right side
    675,859.74x = 359,469,804,637.52
  5. Step 5: Solve for x
    x = 359,469,804,637.52/675,859.74
  6. Step 6: Final answer
    x = 531,870.42

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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.