Finding the Fourth Proportional to 667,776,720.34, 921,528,479.49 and 370,415,883.95
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Solution
The fourth proportional to 667,776,720.34, 921,528,479.49 and 370,415,883.95 is: 511,172,036.87
Step by Step Solution
- Step 1: Write the proportion equation
667,776,720.34 : 921,528,479.49 = 370,415,883.95 : x - Step 2: Convert to fraction form
667,776,720.34/921,528,479.49 = 370,415,883.95/x - Step 3: Cross multiply
667,776,720.34x = 921,528,479.49 × 370,415,883.95 - Step 4: Simplify right side
667,776,720.34x = 341,348,786,312,846,848 - Step 5: Solve for x
x = 341,348,786,312,846,848/667,776,720.34 - Step 6: Final answer
x = 511,172,036.87
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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.