Finding the Fourth Proportional to 1,297,266,545.80, 1,790,205,706.92 and 702,546,197.68
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Solution
The fourth proportional to 1,297,266,545.80, 1,790,205,706.92 and 702,546,197.68 is: 969,501,770.11
Step by Step Solution
- Step 1: Write the proportion equation
1,297,266,545.80 : 1,790,205,706.92 = 702,546,197.68 : x - Step 2: Convert to fraction form
1,297,266,545.80/1,790,205,706.92 = 702,546,197.68/x - Step 3: Cross multiply
1,297,266,545.80x = 1,790,205,706.92 × 702,546,197.68 - Step 4: Simplify right side
1,297,266,545.80x = 1,257,702,212,461,682,432 - Step 5: Solve for x
x = 1,257,702,212,461,682,432/1,297,266,545.80 - Step 6: Final answer
x = 969,501,770.11
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1.5x scale
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.