Finding the Fourth Proportional to 9,206,985,701.94, 12,705,616,371 and 5,137,844,742.96
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Solution
The fourth proportional to 9,206,985,701.94, 12,705,616,371 and 5,137,844,742.96 is: 7,090,212,409.48
Step by Step Solution
- Step 1: Write the proportion equation
9,206,985,701.94 : 12,705,616,371 = 5,137,844,742.96 : x - Step 2: Convert to fraction form
9,206,985,701.94/12,705,616,371 = 5,137,844,742.96/x - Step 3: Cross multiply
9,206,985,701.94x = 12,705,616,371 × 5,137,844,742.96 - Step 4: Simplify right side
9,206,985,701.94x = 65,279,484,277,808,865,280 - Step 5: Solve for x
x = 65,279,484,277,808,865,280/9,206,985,701.94 - Step 6: Final answer
x = 7,090,212,409.48
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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.