Finding the Fourth Proportional to 667,346,965.30, 1,001,020,447.95 and 394,577,326.90
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Solution
The fourth proportional to 667,346,965.30, 1,001,020,447.95 and 394,577,326.90 is: 591,865,990.35
Step by Step Solution
- Step 1: Write the proportion equation
667,346,965.30 : 1,001,020,447.95 = 394,577,326.90 : x - Step 2: Convert to fraction form
667,346,965.30/1,001,020,447.95 = 394,577,326.90/x - Step 3: Cross multiply
667,346,965.30x = 1,001,020,447.95 × 394,577,326.90 - Step 4: Simplify right side
667,346,965.30x = 394,979,972,524,351,552 - Step 5: Solve for x
x = 394,979,972,524,351,552/667,346,965.30 - Step 6: Final answer
x = 591,865,990.35
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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.