Finding the Fourth Proportional to 990,253,712.97, 1,366,582,887.54 and 544,232,885.94
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Solution
The fourth proportional to 990,253,712.97, 1,366,582,887.54 and 544,232,885.94 is: 751,059,389.15
Step by Step Solution
- Step 1: Write the proportion equation
990,253,712.97 : 1,366,582,887.54 = 544,232,885.94 : x - Step 2: Convert to fraction form
990,253,712.97/1,366,582,887.54 = 544,232,885.94/x - Step 3: Cross multiply
990,253,712.97x = 1,366,582,887.54 × 544,232,885.94 - Step 4: Simplify right side
990,253,712.97x = 743,739,348,762,112,768 - Step 5: Solve for x
x = 743,739,348,762,112,768/990,253,712.97 - Step 6: Final answer
x = 751,059,389.15
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Double scale
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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.