Finding the Fourth Proportional to 819,403,313.10, 1,229,104,969.65 and 733,309,871.10
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Solution
The fourth proportional to 819,403,313.10, 1,229,104,969.65 and 733,309,871.10 is: 1,099,964,806.65
Step by Step Solution
- Step 1: Write the proportion equation
819,403,313.10 : 1,229,104,969.65 = 733,309,871.10 : x - Step 2: Convert to fraction form
819,403,313.10/1,229,104,969.65 = 733,309,871.10/x - Step 3: Cross multiply
819,403,313.10x = 1,229,104,969.65 × 733,309,871.10 - Step 4: Simplify right side
819,403,313.10x = 901,314,806,862,411,008 - Step 5: Solve for x
x = 901,314,806,862,411,008/819,403,313.10 - Step 6: Final answer
x = 1,099,964,806.65
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Double scale
Find fourth proportional to 819,403,314.10, 1,229,104,971.15 and 733,309,872.10
Similar ratio
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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.