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Finding the Fourth Proportional to 489,588.71, 675,699.57 and 274,741.47

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Solution

The fourth proportional to 489,588.71, 675,699.57 and 274,741.47 is: 379,180.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,588.71 : 675,699.57 = 274,741.47 : x
  2. Step 2: Convert to fraction form
    489,588.71/675,699.57 = 274,741.47/x
  3. Step 3: Cross multiply
    489,588.71x = 675,699.57 × 274,741.47
  4. Step 4: Simplify right side
    489,588.71x = 185,642,693,140.17
  5. Step 5: Solve for x
    x = 185,642,693,140.17/489,588.71
  6. Step 6: Final answer
    x = 379,180.92

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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.