Finding the Fourth Proportional to 722,229,981.18, 1,081,788,409.49 and 487,771,431.05
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Solution
The fourth proportional to 722,229,981.18, 1,081,788,409.49 and 487,771,431.05 is: 730,605,893.32
Step by Step Solution
- Step 1: Write the proportion equation
722,229,981.18 : 1,081,788,409.49 = 487,771,431.05 : x - Step 2: Convert to fraction form
722,229,981.18/1,081,788,409.49 = 487,771,431.05/x - Step 3: Cross multiply
722,229,981.18x = 1,081,788,409.49 × 487,771,431.05 - Step 4: Simplify right side
722,229,981.18x = 527,665,480,582,392,896 - Step 5: Solve for x
x = 527,665,480,582,392,896/722,229,981.18 - Step 6: Final answer
x = 730,605,893.32
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.