Finding the Fourth Proportional to 393,163,028.80, 589,744,543.20 and 368,929,319.20
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Solution
The fourth proportional to 393,163,028.80, 589,744,543.20 and 368,929,319.20 is: 553,393,978.80
Step by Step Solution
- Step 1: Write the proportion equation
393,163,028.80 : 589,744,543.20 = 368,929,319.20 : x - Step 2: Convert to fraction form
393,163,028.80/589,744,543.20 = 368,929,319.20/x - Step 3: Cross multiply
393,163,028.80x = 589,744,543.20 × 368,929,319.20 - Step 4: Simplify right side
393,163,028.80x = 217,574,052,824,691,008 - Step 5: Solve for x
x = 217,574,052,824,691,008/393,163,028.80 - Step 6: Final answer
x = 553,393,978.80
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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.