Finding the Fourth Proportional to 704,268,537.97, 971,852,640.56 and 390,982,573.79
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Solution
The fourth proportional to 704,268,537.97, 971,852,640.56 and 390,982,573.79 is: 539,534,887.99
Step by Step Solution
- Step 1: Write the proportion equation
704,268,537.97 : 971,852,640.56 = 390,982,573.79 : x - Step 2: Convert to fraction form
704,268,537.97/971,852,640.56 = 390,982,573.79/x - Step 3: Cross multiply
704,268,537.97x = 971,852,640.56 × 390,982,573.79 - Step 4: Simplify right side
704,268,537.97x = 379,977,446,752,440,704 - Step 5: Solve for x
x = 379,977,446,752,440,704/704,268,537.97 - Step 6: Final answer
x = 539,534,887.99
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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.