Finding the Fourth Proportional to 691,706,343.99, 954,577,518.36 and 378,433,389.03
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Solution
The fourth proportional to 691,706,343.99, 954,577,518.36 and 378,433,389.03 is: 522,250,530.88
Step by Step Solution
- Step 1: Write the proportion equation
691,706,343.99 : 954,577,518.36 = 378,433,389.03 : x - Step 2: Convert to fraction form
691,706,343.99/954,577,518.36 = 378,433,389.03/x - Step 3: Cross multiply
691,706,343.99x = 954,577,518.36 × 378,433,389.03 - Step 4: Simplify right side
691,706,343.99x = 361,244,005,364,821,824 - Step 5: Solve for x
x = 361,244,005,364,821,824/691,706,343.99 - Step 6: Final answer
x = 522,250,530.88
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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.