Finding the Fourth Proportional to 1,919,239,218.78, 2,879,921,119.54 and 936,673,897.11
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Solution
The fourth proportional to 1,919,239,218.78, 2,879,921,119.54 and 936,673,897.11 is: 1,405,529,290.99
Step by Step Solution
- Step 1: Write the proportion equation
1,919,239,218.78 : 2,879,921,119.54 = 936,673,897.11 : x - Step 2: Convert to fraction form
1,919,239,218.78/2,879,921,119.54 = 936,673,897.11/x - Step 3: Cross multiply
1,919,239,218.78x = 2,879,921,119.54 × 936,673,897.11 - Step 4: Simplify right side
1,919,239,218.78x = 2,697,546,938,408,926,208 - Step 5: Solve for x
x = 2,697,546,938,408,926,208/1,919,239,218.78 - Step 6: Final answer
x = 1,405,529,290.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.