Finding the Fourth Proportional to 389,590,393.35, 537,635,261.42 and 210,974,589.91
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Solution
The fourth proportional to 389,590,393.35, 537,635,261.42 and 210,974,589.91 is: 291,145,214.91
Step by Step Solution
- Step 1: Write the proportion equation
389,590,393.35 : 537,635,261.42 = 210,974,589.91 : x - Step 2: Convert to fraction form
389,590,393.35/537,635,261.42 = 210,974,589.91/x - Step 3: Cross multiply
389,590,393.35x = 537,635,261.42 × 210,974,589.91 - Step 4: Simplify right side
389,590,393.35x = 113,427,378,799,414,448 - Step 5: Solve for x
x = 113,427,378,799,414,448/389,590,393.35 - Step 6: Final answer
x = 291,145,214.91
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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.