Finding the Fourth Proportional to 1,225,623,924.12, 1,691,882,899.98 and 823,970,617.08
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Solution
The fourth proportional to 1,225,623,924.12, 1,691,882,899.98 and 823,970,617.08 is: 1,137,430,307.69
Step by Step Solution
- Step 1: Write the proportion equation
1,225,623,924.12 : 1,691,882,899.98 = 823,970,617.08 : x - Step 2: Convert to fraction form
1,225,623,924.12/1,691,882,899.98 = 823,970,617.08/x - Step 3: Cross multiply
1,225,623,924.12x = 1,691,882,899.98 × 823,970,617.08 - Step 4: Simplify right side
1,225,623,924.12x = 1,394,061,797,123,620,608 - Step 5: Solve for x
x = 1,394,061,797,123,620,608/1,225,623,924.12 - Step 6: Final answer
x = 1,137,430,307.69
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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.