Finding the Fourth Proportional to 821,382,785.68, 1,133,563,857.54 and 464,026,620.10
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Solution
The fourth proportional to 821,382,785.68, 1,133,563,857.54 and 464,026,620.10 is: 640,388,153.55
Step by Step Solution
- Step 1: Write the proportion equation
821,382,785.68 : 1,133,563,857.54 = 464,026,620.10 : x - Step 2: Convert to fraction form
821,382,785.68/1,133,563,857.54 = 464,026,620.10/x - Step 3: Cross multiply
821,382,785.68x = 1,133,563,857.54 × 464,026,620.10 - Step 4: Simplify right side
821,382,785.68x = 526,003,805,481,804,096 - Step 5: Solve for x
x = 526,003,805,481,804,096/821,382,785.68 - Step 6: Final answer
x = 640,388,153.55
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1.5x scale
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.