Finding the Fourth Proportional to 853,017,685.12, 1,279,526,527.68 and 206,785,429.12
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Solution
The fourth proportional to 853,017,685.12, 1,279,526,527.68 and 206,785,429.12 is: 310,178,143.68
Step by Step Solution
- Step 1: Write the proportion equation
853,017,685.12 : 1,279,526,527.68 = 206,785,429.12 : x - Step 2: Convert to fraction form
853,017,685.12/1,279,526,527.68 = 206,785,429.12/x - Step 3: Cross multiply
853,017,685.12x = 1,279,526,527.68 × 206,785,429.12 - Step 4: Simplify right side
853,017,685.12x = 264,587,442,096,732,384 - Step 5: Solve for x
x = 264,587,442,096,732,384/853,017,685.12 - Step 6: Final answer
x = 310,178,143.68
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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.