Finding the Fourth Proportional to 908,121,134.70, 1,362,181,702.05 and 862,771,502.70
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Solution
The fourth proportional to 908,121,134.70, 1,362,181,702.05 and 862,771,502.70 is: 1,294,157,254.05
Step by Step Solution
- Step 1: Write the proportion equation
908,121,134.70 : 1,362,181,702.05 = 862,771,502.70 : x - Step 2: Convert to fraction form
908,121,134.70/1,362,181,702.05 = 862,771,502.70/x - Step 3: Cross multiply
908,121,134.70x = 1,362,181,702.05 × 862,771,502.70 - Step 4: Simplify right side
908,121,134.70x = 1,175,251,554,028,122,112 - Step 5: Solve for x
x = 1,175,251,554,028,122,112/908,121,134.70 - Step 6: Final answer
x = 1,294,157,254.05
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Double scale
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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.