Finding the Fourth Proportional to 1,347,836,178.51, 2,021,971,515.99 and 415,158,593.12
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Solution
The fourth proportional to 1,347,836,178.51, 2,021,971,515.99 and 415,158,593.12 is: 622,804,806.17
Step by Step Solution
- Step 1: Write the proportion equation
1,347,836,178.51 : 2,021,971,515.99 = 415,158,593.12 : x - Step 2: Convert to fraction form
1,347,836,178.51/2,021,971,515.99 = 415,158,593.12/x - Step 3: Cross multiply
1,347,836,178.51x = 2,021,971,515.99 × 415,158,593.12 - Step 4: Simplify right side
1,347,836,178.51x = 839,438,849,911,138,944 - Step 5: Solve for x
x = 839,438,849,911,138,944/1,347,836,178.51 - Step 6: Final answer
x = 622,804,806.17
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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.