Finding the Fourth Proportional to 938,996,882.10, 1,415,244,692.43 and 809,403,321.19
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Solution
The fourth proportional to 938,996,882.10, 1,415,244,692.43 and 809,403,321.19 is: 1,219,922,851.92
Step by Step Solution
- Step 1: Write the proportion equation
938,996,882.10 : 1,415,244,692.43 = 809,403,321.19 : x - Step 2: Convert to fraction form
938,996,882.10/1,415,244,692.43 = 809,403,321.19/x - Step 3: Cross multiply
938,996,882.10x = 1,415,244,692.43 × 809,403,321.19 - Step 4: Simplify right side
938,996,882.10x = 1,145,503,754,356,381,696 - Step 5: Solve for x
x = 1,145,503,754,356,381,696/938,996,882.10 - Step 6: Final answer
x = 1,219,922,851.92
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.