Finding the Fourth Proportional to 987,120,027.04, 1,361,431,343.68 and 867,787,476.48
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Solution
The fourth proportional to 987,120,027.04, 1,361,431,343.68 and 867,787,476.48 is: 1,196,848,445.75
Step by Step Solution
- Step 1: Write the proportion equation
987,120,027.04 : 1,361,431,343.68 = 867,787,476.48 : x - Step 2: Convert to fraction form
987,120,027.04/1,361,431,343.68 = 867,787,476.48/x - Step 3: Cross multiply
987,120,027.04x = 1,361,431,343.68 × 867,787,476.48 - Step 4: Simplify right side
987,120,027.04x = 1,181,433,070,132,843,008 - Step 5: Solve for x
x = 1,181,433,070,132,843,008/987,120,027.04 - Step 6: Final answer
x = 1,196,848,445.75
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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.