Finding the Fourth Proportional to 1,129,424,381.12, 1,558,643,452.08 and 627,654,316.16
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Solution
The fourth proportional to 1,129,424,381.12, 1,558,643,452.08 and 627,654,316.16 is: 866,183,966.28
Step by Step Solution
- Step 1: Write the proportion equation
1,129,424,381.12 : 1,558,643,452.08 = 627,654,316.16 : x - Step 2: Convert to fraction form
1,129,424,381.12/1,558,643,452.08 = 627,654,316.16/x - Step 3: Cross multiply
1,129,424,381.12x = 1,558,643,452.08 × 627,654,316.16 - Step 4: Simplify right side
1,129,424,381.12x = 978,289,290,052,534,016 - Step 5: Solve for x
x = 978,289,290,052,534,016/1,129,424,381.12 - Step 6: Final answer
x = 866,183,966.28
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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.