Home / 489,431.40-734,414.58-189,923.76

Finding the Fourth Proportional to 489,431.40, 734,414.58 and 189,923.76

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Solution

The fourth proportional to 489,431.40, 734,414.58 and 189,923.76 is: 284,989.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,431.40 : 734,414.58 = 189,923.76 : x
  2. Step 2: Convert to fraction form
    489,431.40/734,414.58 = 189,923.76/x
  3. Step 3: Cross multiply
    489,431.40x = 734,414.58 × 189,923.76
  4. Step 4: Simplify right side
    489,431.40x = 139,482,778,432.42
  5. Step 5: Solve for x
    x = 139,482,778,432.42/489,431.40
  6. Step 6: Final answer
    x = 284,989.44

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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.