Finding the Fourth Proportional to 748,608,090.40, 1,122,912,135.60 and 263,982,887.20
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Solution
The fourth proportional to 748,608,090.40, 1,122,912,135.60 and 263,982,887.20 is: 395,974,330.80
Step by Step Solution
- Step 1: Write the proportion equation
748,608,090.40 : 1,122,912,135.60 = 263,982,887.20 : x - Step 2: Convert to fraction form
748,608,090.40/1,122,912,135.60 = 263,982,887.20/x - Step 3: Cross multiply
748,608,090.40x = 1,122,912,135.60 × 263,982,887.20 - Step 4: Simplify right side
748,608,090.40x = 296,429,587,627,605,888 - Step 5: Solve for x
x = 296,429,587,627,605,888/748,608,090.40 - Step 6: Final answer
x = 395,974,330.80
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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.