Home / 511,350.48-705,705.66-281,928.78

Finding the Fourth Proportional to 511,350.48, 705,705.66 and 281,928.78

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Solution

The fourth proportional to 511,350.48, 705,705.66 and 281,928.78 is: 389,084.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,350.48 : 705,705.66 = 281,928.78 : x
  2. Step 2: Convert to fraction form
    511,350.48/705,705.66 = 281,928.78/x
  3. Step 3: Cross multiply
    511,350.48x = 705,705.66 × 281,928.78
  4. Step 4: Simplify right side
    511,350.48x = 198,958,735,762.90
  5. Step 5: Solve for x
    x = 198,958,735,762.90/511,350.48
  6. Step 6: Final answer
    x = 389,084.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.