Finding the Fourth Proportional to 1,311,916,590.36, 1,810,466,403.84 and 783,326,767.68
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Solution
The fourth proportional to 1,311,916,590.36, 1,810,466,403.84 and 783,326,767.68 is: 1,081,003,782.20
Step by Step Solution
- Step 1: Write the proportion equation
1,311,916,590.36 : 1,810,466,403.84 = 783,326,767.68 : x - Step 2: Convert to fraction form
1,311,916,590.36/1,810,466,403.84 = 783,326,767.68/x - Step 3: Cross multiply
1,311,916,590.36x = 1,810,466,403.84 × 783,326,767.68 - Step 4: Simplify right side
1,311,916,590.36x = 1,418,186,796,113,220,608 - Step 5: Solve for x
x = 1,418,186,796,113,220,608/1,311,916,590.36 - Step 6: Final answer
x = 1,081,003,782.20
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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.