Home / 1,131,352,745.60-1,561,402,704.93-685,303,021.15

Finding the Fourth Proportional to 1,131,352,745.60, 1,561,402,704.93 and 685,303,021.15

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Solution

The fourth proportional to 1,131,352,745.60, 1,561,402,704.93 and 685,303,021.15 is: 945,800,498.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,352,745.60 : 1,561,402,704.93 = 685,303,021.15 : x
  2. Step 2: Convert to fraction form
    1,131,352,745.60/1,561,402,704.93 = 685,303,021.15/x
  3. Step 3: Cross multiply
    1,131,352,745.60x = 1,561,402,704.93 × 685,303,021.15
  4. Step 4: Simplify right side
    1,131,352,745.60x = 1,070,033,990,920,311,040
  5. Step 5: Solve for x
    x = 1,070,033,990,920,311,040/1,131,352,745.60
  6. Step 6: Final answer
    x = 945,800,498.63

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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.