Finding the Fourth Proportional to 9,790,785,771.20, 14,686,178,656.80 and 7,855,868,139.20
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Solution
The fourth proportional to 9,790,785,771.20, 14,686,178,656.80 and 7,855,868,139.20 is: 11,783,802,208.80
Step by Step Solution
- Step 1: Write the proportion equation
9,790,785,771.20 : 14,686,178,656.80 = 7,855,868,139.20 : x - Step 2: Convert to fraction form
9,790,785,771.20/14,686,178,656.80 = 7,855,868,139.20/x - Step 3: Cross multiply
9,790,785,771.20x = 14,686,178,656.80 × 7,855,868,139.20 - Step 4: Simplify right side
9,790,785,771.20x = 115,372,682,996,554,170,368 - Step 5: Solve for x
x = 115,372,682,996,554,170,368/9,790,785,771.20 - Step 6: Final answer
x = 11,783,802,208.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.