Home / 489,776.32-734,525.40-190,192.96

Finding the Fourth Proportional to 489,776.32, 734,525.40 and 190,192.96

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Solution

The fourth proportional to 489,776.32, 734,525.40 and 190,192.96 is: 285,235.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,776.32 : 734,525.40 = 190,192.96 : x
  2. Step 2: Convert to fraction form
    489,776.32/734,525.40 = 190,192.96/x
  3. Step 3: Cross multiply
    489,776.32x = 734,525.40 × 190,192.96
  4. Step 4: Simplify right side
    489,776.32x = 139,701,560,021.18
  5. Step 5: Solve for x
    x = 139,701,560,021.18/489,776.32
  6. Step 6: Final answer
    x = 285,235.43

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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.