Finding the Fourth Proportional to 1,382,628,715.74, 1,908,175,492.53 and 847,135,756.44
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Solution
The fourth proportional to 1,382,628,715.74, 1,908,175,492.53 and 847,135,756.44 is: 1,169,137,940.56
Step by Step Solution
- Step 1: Write the proportion equation
1,382,628,715.74 : 1,908,175,492.53 = 847,135,756.44 : x - Step 2: Convert to fraction form
1,382,628,715.74/1,908,175,492.53 = 847,135,756.44/x - Step 3: Cross multiply
1,382,628,715.74x = 1,908,175,492.53 × 847,135,756.44 - Step 4: Simplify right side
1,382,628,715.74x = 1,616,483,689,284,671,232 - Step 5: Solve for x
x = 1,616,483,689,284,671,232/1,382,628,715.74 - Step 6: Final answer
x = 1,169,137,940.56
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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.