Home / 489,942-734,959.37-190,445.72

Finding the Fourth Proportional to 489,942, 734,959.37 and 190,445.72

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Solution

The fourth proportional to 489,942, 734,959.37 and 190,445.72 is: 285,686.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,942 : 734,959.37 = 190,445.72 : x
  2. Step 2: Convert to fraction form
    489,942/734,959.37 = 190,445.72/x
  3. Step 3: Cross multiply
    489,942x = 734,959.37 × 190,445.72
  4. Step 4: Simplify right side
    489,942x = 139,969,863,191.71
  5. Step 5: Solve for x
    x = 139,969,863,191.71/489,942
  6. Step 6: Final answer
    x = 285,686.60

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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.