Finding the Fourth Proportional to 449,990,645.38, 621,011,202.03 and 251,740,313.62
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Solution
The fourth proportional to 449,990,645.38, 621,011,202.03 and 251,740,313.62 is: 347,415,121.55
Step by Step Solution
- Step 1: Write the proportion equation
449,990,645.38 : 621,011,202.03 = 251,740,313.62 : x - Step 2: Convert to fraction form
449,990,645.38/621,011,202.03 = 251,740,313.62/x - Step 3: Cross multiply
449,990,645.38x = 621,011,202.03 × 251,740,313.62 - Step 4: Simplify right side
449,990,645.38x = 156,333,554,760,565,376 - Step 5: Solve for x
x = 156,333,554,760,565,376/449,990,645.38 - Step 6: Final answer
x = 347,415,121.55
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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.