Finding the Fourth Proportional to 1,328,604,313.20, 1,992,906,469.80 and 775,338,802.80
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Solution
The fourth proportional to 1,328,604,313.20, 1,992,906,469.80 and 775,338,802.80 is: 1,163,008,204.20
Step by Step Solution
- Step 1: Write the proportion equation
1,328,604,313.20 : 1,992,906,469.80 = 775,338,802.80 : x - Step 2: Convert to fraction form
1,328,604,313.20/1,992,906,469.80 = 775,338,802.80/x - Step 3: Cross multiply
1,328,604,313.20x = 1,992,906,469.80 × 775,338,802.80 - Step 4: Simplify right side
1,328,604,313.20x = 1,545,177,716,387,106,304 - Step 5: Solve for x
x = 1,545,177,716,387,106,304/1,328,604,313.20 - Step 6: Final answer
x = 1,163,008,204.20
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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.