Finding the Fourth Proportional to 908,121,019.20, 1,362,181,528.80 and 862,771,387.20
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Solution
The fourth proportional to 908,121,019.20, 1,362,181,528.80 and 862,771,387.20 is: 1,294,157,080.80
Step by Step Solution
- Step 1: Write the proportion equation
908,121,019.20 : 1,362,181,528.80 = 862,771,387.20 : x - Step 2: Convert to fraction form
908,121,019.20/1,362,181,528.80 = 862,771,387.20/x - Step 3: Cross multiply
908,121,019.20x = 1,362,181,528.80 × 862,771,387.20 - Step 4: Simplify right side
908,121,019.20x = 1,175,251,247,220,992,768 - Step 5: Solve for x
x = 1,175,251,247,220,992,768/908,121,019.20 - Step 6: Final answer
x = 1,294,157,080.80
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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.