Finding the Fourth Proportional to 1,149,552,642.20, 1,724,328,963.30 and 331,691,624.60
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Solution
The fourth proportional to 1,149,552,642.20, 1,724,328,963.30 and 331,691,624.60 is: 497,537,436.90
Step by Step Solution
- Step 1: Write the proportion equation
1,149,552,642.20 : 1,724,328,963.30 = 331,691,624.60 : x - Step 2: Convert to fraction form
1,149,552,642.20/1,724,328,963.30 = 331,691,624.60/x - Step 3: Cross multiply
1,149,552,642.20x = 1,724,328,963.30 × 331,691,624.60 - Step 4: Simplify right side
1,149,552,642.20x = 571,945,475,181,810,816 - Step 5: Solve for x
x = 571,945,475,181,810,816/1,149,552,642.20 - Step 6: Final answer
x = 497,537,436.90
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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.