Finding the Fourth Proportional to 708,589,027.80, 989,728,813.80 and 708,589,027.80
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Solution
The fourth proportional to 708,589,027.80, 989,728,813.80 and 708,589,027.80 is: 989,728,813.80
Step by Step Solution
- Step 1: Write the proportion equation
708,589,027.80 : 989,728,813.80 = 708,589,027.80 : x - Step 2: Convert to fraction form
708,589,027.80/989,728,813.80 = 708,589,027.80/x - Step 3: Cross multiply
708,589,027.80x = 989,728,813.80 × 708,589,027.80 - Step 4: Simplify right side
708,589,027.80x = 701,310,977,956,189,184 - Step 5: Solve for x
x = 701,310,977,956,189,184/708,589,027.80 - Step 6: Final answer
x = 989,728,813.80
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.