Home / 511,382.52-705,739.50-281,938.68

Finding the Fourth Proportional to 511,382.52, 705,739.50 and 281,938.68

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Solution

The fourth proportional to 511,382.52, 705,739.50 and 281,938.68 is: 389,092.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,382.52 : 705,739.50 = 281,938.68 : x
  2. Step 2: Convert to fraction form
    511,382.52/705,739.50 = 281,938.68/x
  3. Step 3: Cross multiply
    511,382.52x = 705,739.50 × 281,938.68
  4. Step 4: Simplify right side
    511,382.52x = 198,975,263,053.86
  5. Step 5: Solve for x
    x = 198,975,263,053.86/511,382.52
  6. Step 6: Final answer
    x = 389,092.81

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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.