Finding the Fourth Proportional to 858,477,535.80, 1,287,716,303.70 and 720,728,028.60
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Solution
The fourth proportional to 858,477,535.80, 1,287,716,303.70 and 720,728,028.60 is: 1,081,092,042.90
Step by Step Solution
- Step 1: Write the proportion equation
858,477,535.80 : 1,287,716,303.70 = 720,728,028.60 : x - Step 2: Convert to fraction form
858,477,535.80/1,287,716,303.70 = 720,728,028.60/x - Step 3: Cross multiply
858,477,535.80x = 1,287,716,303.70 × 720,728,028.60 - Step 4: Simplify right side
858,477,535.80x = 928,093,232,961,779,968 - Step 5: Solve for x
x = 928,093,232,961,779,968/858,477,535.80 - Step 6: Final answer
x = 1,081,092,042.90
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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.