Finding the Fourth Proportional to 790,712,786.41, 1,186,605,021.75 and 324,458,503.36
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Solution
The fourth proportional to 790,712,786.41, 1,186,605,021.75 and 324,458,503.36 is: 486,907,630.75
Step by Step Solution
- Step 1: Write the proportion equation
790,712,786.41 : 1,186,605,021.75 = 324,458,503.36 : x - Step 2: Convert to fraction form
790,712,786.41/1,186,605,021.75 = 324,458,503.36/x - Step 3: Cross multiply
790,712,786.41x = 1,186,605,021.75 × 324,458,503.36 - Step 4: Simplify right side
790,712,786.41x = 385,004,089,436,465,280 - Step 5: Solve for x
x = 385,004,089,436,465,280/790,712,786.41 - Step 6: Final answer
x = 486,907,630.75
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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.