Home / 511,079,515.68-705,288,337.61-285,018,744.86

Finding the Fourth Proportional to 511,079,515.68, 705,288,337.61 and 285,018,744.86

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Solution

The fourth proportional to 511,079,515.68, 705,288,337.61 and 285,018,744.86 is: 393,325,090.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,079,515.68 : 705,288,337.61 = 285,018,744.86 : x
  2. Step 2: Convert to fraction form
    511,079,515.68/705,288,337.61 = 285,018,744.86/x
  3. Step 3: Cross multiply
    511,079,515.68x = 705,288,337.61 × 285,018,744.86
  4. Step 4: Simplify right side
    511,079,515.68x = 201,020,396,745,046,624
  5. Step 5: Solve for x
    x = 201,020,396,745,046,624/511,079,515.68
  6. Step 6: Final answer
    x = 393,325,090.48

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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.