Finding the Fourth Proportional to 1,668,539,588.81, 2,302,586,912.72 and 905,583,670.40
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Solution
The fourth proportional to 1,668,539,588.81, 2,302,586,912.72 and 905,583,670.40 is: 1,249,706,702.69
Step by Step Solution
- Step 1: Write the proportion equation
1,668,539,588.81 : 2,302,586,912.72 = 905,583,670.40 : x - Step 2: Convert to fraction form
1,668,539,588.81/2,302,586,912.72 = 905,583,670.40/x - Step 3: Cross multiply
1,668,539,588.81x = 2,302,586,912.72 × 905,583,670.40 - Step 4: Simplify right side
1,668,539,588.81x = 2,085,185,107,835,981,824 - Step 5: Solve for x
x = 2,085,185,107,835,981,824/1,668,539,588.81 - Step 6: Final answer
x = 1,249,706,702.69
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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.