Finding the Fourth Proportional to 789,942,459.09, 1,184,765,549.14 and 396,363,609.48
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Solution
The fourth proportional to 789,942,459.09, 1,184,765,549.14 and 396,363,609.48 is: 594,471,083.36
Step by Step Solution
- Step 1: Write the proportion equation
789,942,459.09 : 1,184,765,549.14 = 396,363,609.48 : x - Step 2: Convert to fraction form
789,942,459.09/1,184,765,549.14 = 396,363,609.48/x - Step 3: Cross multiply
789,942,459.09x = 1,184,765,549.14 × 396,363,609.48 - Step 4: Simplify right side
789,942,459.09x = 469,597,949,449,603,200 - Step 5: Solve for x
x = 469,597,949,449,603,200/789,942,459.09 - Step 6: Final answer
x = 594,471,083.36
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Double scale
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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.