Home / 511,079,515.30-705,288,337.08-285,018,744.48

Finding the Fourth Proportional to 511,079,515.30, 705,288,337.08 and 285,018,744.48

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Solution

The fourth proportional to 511,079,515.30, 705,288,337.08 and 285,018,744.48 is: 393,325,089.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,079,515.30 : 705,288,337.08 = 285,018,744.48 : x
  2. Step 2: Convert to fraction form
    511,079,515.30/705,288,337.08 = 285,018,744.48/x
  3. Step 3: Cross multiply
    511,079,515.30x = 705,288,337.08 × 285,018,744.48
  4. Step 4: Simplify right side
    511,079,515.30x = 201,020,396,330,928,640
  5. Step 5: Solve for x
    x = 201,020,396,330,928,640/511,079,515.30
  6. Step 6: Final answer
    x = 393,325,089.96

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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.