Finding the Fourth Proportional to 691,856,425.36, 954,761,828.70 and 378,590,677.12
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Solution
The fourth proportional to 691,856,425.36, 954,761,828.70 and 378,590,677.12 is: 522,455,113.47
Step by Step Solution
- Step 1: Write the proportion equation
691,856,425.36 : 954,761,828.70 = 378,590,677.12 : x - Step 2: Convert to fraction form
691,856,425.36/954,761,828.70 = 378,590,677.12/x - Step 3: Cross multiply
691,856,425.36x = 954,761,828.70 × 378,590,677.12 - Step 4: Simplify right side
691,856,425.36x = 361,463,927,215,862,464 - Step 5: Solve for x
x = 361,463,927,215,862,464/691,856,425.36 - Step 6: Final answer
x = 522,455,113.47
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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.