Finding the Fourth Proportional to 857,571,476.49, 1,182,781,452.69 and 620,306,694.18
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Solution
The fourth proportional to 857,571,476.49, 1,182,781,452.69 and 620,306,694.18 is: 855,540,643.51
Step by Step Solution
- Step 1: Write the proportion equation
857,571,476.49 : 1,182,781,452.69 = 620,306,694.18 : x - Step 2: Convert to fraction form
857,571,476.49/1,182,781,452.69 = 620,306,694.18/x - Step 3: Cross multiply
857,571,476.49x = 1,182,781,452.69 × 620,306,694.18 - Step 4: Simplify right side
857,571,476.49x = 733,687,252,855,552,000 - Step 5: Solve for x
x = 733,687,252,855,552,000/857,571,476.49 - Step 6: Final answer
x = 855,540,643.51
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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.