Finding the Fourth Proportional to 1,981,567,998.70, 2,972,351,998.05 and 1,328,533,297.90
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Solution
The fourth proportional to 1,981,567,998.70, 2,972,351,998.05 and 1,328,533,297.90 is: 1,992,799,946.85
Step by Step Solution
- Step 1: Write the proportion equation
1,981,567,998.70 : 2,972,351,998.05 = 1,328,533,297.90 : x - Step 2: Convert to fraction form
1,981,567,998.70/2,972,351,998.05 = 1,328,533,297.90/x - Step 3: Cross multiply
1,981,567,998.70x = 2,972,351,998.05 × 1,328,533,297.90 - Step 4: Simplify right side
1,981,567,998.70x = 3,948,868,602,489,021,440 - Step 5: Solve for x
x = 3,948,868,602,489,021,440/1,981,567,998.70 - Step 6: Final answer
x = 1,992,799,946.85
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.