Finding the Fourth Proportional to 426,385,232.80, 639,577,849.20 and 395,774,231.20
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Solution
The fourth proportional to 426,385,232.80, 639,577,849.20 and 395,774,231.20 is: 593,661,346.80
Step by Step Solution
- Step 1: Write the proportion equation
426,385,232.80 : 639,577,849.20 = 395,774,231.20 : x - Step 2: Convert to fraction form
426,385,232.80/639,577,849.20 = 395,774,231.20/x - Step 3: Cross multiply
426,385,232.80x = 639,577,849.20 × 395,774,231.20 - Step 4: Simplify right side
426,385,232.80x = 253,128,431,559,679,552 - Step 5: Solve for x
x = 253,128,431,559,679,552/426,385,232.80 - Step 6: Final answer
x = 593,661,346.80
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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.