Home / 1,315,379,739.99-1,815,457,928.39-786,801,878.38

Finding the Fourth Proportional to 1,315,379,739.99, 1,815,457,928.39 and 786,801,878.38

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Solution

The fourth proportional to 1,315,379,739.99, 1,815,457,928.39 and 786,801,878.38 is: 1,085,926,493.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,379,739.99 : 1,815,457,928.39 = 786,801,878.38 : x
  2. Step 2: Convert to fraction form
    1,315,379,739.99/1,815,457,928.39 = 786,801,878.38/x
  3. Step 3: Cross multiply
    1,315,379,739.99x = 1,815,457,928.39 × 786,801,878.38
  4. Step 4: Simplify right side
    1,315,379,739.99x = 1,428,405,708,177,115,648
  5. Step 5: Solve for x
    x = 1,428,405,708,177,115,648/1,315,379,739.99
  6. Step 6: Final answer
    x = 1,085,926,493.13

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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.