Finding the Fourth Proportional to 1,638,539,494.24, 2,457,811,729.68 and 669,191,110.24
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Solution
The fourth proportional to 1,638,539,494.24, 2,457,811,729.68 and 669,191,110.24 is: 1,003,787,681.61
Step by Step Solution
- Step 1: Write the proportion equation
1,638,539,494.24 : 2,457,811,729.68 = 669,191,110.24 : x - Step 2: Convert to fraction form
1,638,539,494.24/2,457,811,729.68 = 669,191,110.24/x - Step 3: Cross multiply
1,638,539,494.24x = 2,457,811,729.68 × 669,191,110.24 - Step 4: Simplify right side
1,638,539,494.24x = 1,644,745,760,145,453,824 - Step 5: Solve for x
x = 1,644,745,760,145,453,824/1,638,539,494.24 - Step 6: Final answer
x = 1,003,787,681.61
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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.