Finding the Fourth Proportional to 1,284,428,180.68, 1,772,559,613.84 and 719,923,495.84
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Solution
The fourth proportional to 1,284,428,180.68, 1,772,559,613.84 and 719,923,495.84 is: 993,521,734.40
Step by Step Solution
- Step 1: Write the proportion equation
1,284,428,180.68 : 1,772,559,613.84 = 719,923,495.84 : x - Step 2: Convert to fraction form
1,284,428,180.68/1,772,559,613.84 = 719,923,495.84/x - Step 3: Cross multiply
1,284,428,180.68x = 1,772,559,613.84 × 719,923,495.84 - Step 4: Simplify right side
1,284,428,180.68x = 1,276,107,313,780,493,312 - Step 5: Solve for x
x = 1,276,107,313,780,493,312/1,284,428,180.68 - Step 6: Final answer
x = 993,521,734.40
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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.