Finding the Fourth Proportional to 1,668,539,587.81, 2,302,586,911.34 and 905,583,669.40
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Solution
The fourth proportional to 1,668,539,587.81, 2,302,586,911.34 and 905,583,669.40 is: 1,249,706,701.31
Step by Step Solution
- Step 1: Write the proportion equation
1,668,539,587.81 : 2,302,586,911.34 = 905,583,669.40 : x - Step 2: Convert to fraction form
1,668,539,587.81/2,302,586,911.34 = 905,583,669.40/x - Step 3: Cross multiply
1,668,539,587.81x = 2,302,586,911.34 × 905,583,669.40 - Step 4: Simplify right side
1,668,539,587.81x = 2,085,185,104,283,689,728 - Step 5: Solve for x
x = 2,085,185,104,283,689,728/1,668,539,587.81 - Step 6: Final answer
x = 1,249,706,701.31
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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.