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Finding the Fourth Proportional to 889,969.92, 1,334,021.76 and 416,256

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Solution

The fourth proportional to 889,969.92, 1,334,021.76 and 416,256 is: 623,947.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,969.92 : 1,334,021.76 = 416,256 : x
  2. Step 2: Convert to fraction form
    889,969.92/1,334,021.76 = 416,256/x
  3. Step 3: Cross multiply
    889,969.92x = 1,334,021.76 × 416,256
  4. Step 4: Simplify right side
    889,969.92x = 555,294,561,730.56
  5. Step 5: Solve for x
    x = 555,294,561,730.56/889,969.92
  6. Step 6: Final answer
    x = 623,947.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.