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Finding the Fourth Proportional to 889,561, 1,334,479.74 and 298,723.24

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Solution

The fourth proportional to 889,561, 1,334,479.74 and 298,723.24 is: 448,131.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,561 : 1,334,479.74 = 298,723.24 : x
  2. Step 2: Convert to fraction form
    889,561/1,334,479.74 = 298,723.24/x
  3. Step 3: Cross multiply
    889,561x = 1,334,479.74 × 298,723.24
  4. Step 4: Simplify right side
    889,561x = 398,640,111,647.16
  5. Step 5: Solve for x
    x = 398,640,111,647.16/889,561
  6. Step 6: Final answer
    x = 448,131.28

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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.