Finding the Fourth Proportional to 687,451,764.36, 948,703,596.66 and 374,206,410.12
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Solution
The fourth proportional to 687,451,764.36, 948,703,596.66 and 374,206,410.12 is: 516,415,820.83
Step by Step Solution
- Step 1: Write the proportion equation
687,451,764.36 : 948,703,596.66 = 374,206,410.12 : x - Step 2: Convert to fraction form
687,451,764.36/948,703,596.66 = 374,206,410.12/x - Step 3: Cross multiply
687,451,764.36x = 948,703,596.66 × 374,206,410.12 - Step 4: Simplify right side
687,451,764.36x = 355,010,967,174,071,040 - Step 5: Solve for x
x = 355,010,967,174,071,040/687,451,764.36 - Step 6: Final answer
x = 516,415,820.83
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.