Finding the Fourth Proportional to 1,213,988,629,841.30, 1,675,306,275,332.80 and 665,192,736,765.28
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Solution
The fourth proportional to 1,213,988,629,841.30, 1,675,306,275,332.80 and 665,192,736,765.28 is: 917,967,054,068.99
Step by Step Solution
- Step 1: Write the proportion equation
1,213,988,629,841.30 : 1,675,306,275,332.80 = 665,192,736,765.28 : x - Step 2: Convert to fraction form
1,213,988,629,841.30/1,675,306,275,332.80 = 665,192,736,765.28/x - Step 3: Cross multiply
1,213,988,629,841.30x = 1,675,306,275,332.80 × 665,192,736,765.28 - Step 4: Simplify right side
1,213,988,629,841.30x = 1,114,401,566,208,673,020,116,992 - Step 5: Solve for x
x = 1,114,401,566,208,673,020,116,992/1,213,988,629,841.30 - Step 6: Final answer
x = 917,967,054,068.99
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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.