Home / 489,519.83-734,146.09-134,449.45

Finding the Fourth Proportional to 489,519.83, 734,146.09 and 134,449.45

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Solution

The fourth proportional to 489,519.83, 734,146.09 and 134,449.45 is: 201,637.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,519.83 : 734,146.09 = 134,449.45 : x
  2. Step 2: Convert to fraction form
    489,519.83/734,146.09 = 134,449.45/x
  3. Step 3: Cross multiply
    489,519.83x = 734,146.09 × 134,449.45
  4. Step 4: Simplify right side
    489,519.83x = 98,705,538,020.15
  5. Step 5: Solve for x
    x = 98,705,538,020.15/489,519.83
  6. Step 6: Final answer
    x = 201,637.47

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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.