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Finding the Fourth Proportional to 489,887.44, 675,998 and 274,978.24

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Solution

The fourth proportional to 489,887.44, 675,998 and 274,978.24 is: 379,443.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,887.44 : 675,998 = 274,978.24 : x
  2. Step 2: Convert to fraction form
    489,887.44/675,998 = 274,978.24/x
  3. Step 3: Cross multiply
    489,887.44x = 675,998 × 274,978.24
  4. Step 4: Simplify right side
    489,887.44x = 185,884,740,283.52
  5. Step 5: Solve for x
    x = 185,884,740,283.52/489,887.44
  6. Step 6: Final answer
    x = 379,443.78

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1.5x scale

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.