Finding the Fourth Proportional to 786,783,472.08, 1,085,903,313.84 and 469,264,071.36
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Solution
The fourth proportional to 786,783,472.08, 1,085,903,313.84 and 469,264,071.36 is: 647,669,185.03
Step by Step Solution
- Step 1: Write the proportion equation
786,783,472.08 : 1,085,903,313.84 = 469,264,071.36 : x - Step 2: Convert to fraction form
786,783,472.08/1,085,903,313.84 = 469,264,071.36/x - Step 3: Cross multiply
786,783,472.08x = 1,085,903,313.84 × 469,264,071.36 - Step 4: Simplify right side
786,783,472.08x = 509,575,410,155,874,240 - Step 5: Solve for x
x = 509,575,410,155,874,240/786,783,472.08 - Step 6: Final answer
x = 647,669,185.03
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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.