Finding the Fourth Proportional to 986,747.94, 1,361,481.21 and 578,828.70
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Solution
The fourth proportional to 986,747.94, 1,361,481.21 and 578,828.70 is: 798,648.13
Step by Step Solution
- Step 1: Write the proportion equation
986,747.94 : 1,361,481.21 = 578,828.70 : x - Step 2: Convert to fraction form
986,747.94/1,361,481.21 = 578,828.70/x - Step 3: Cross multiply
986,747.94x = 1,361,481.21 × 578,828.70 - Step 4: Simplify right side
986,747.94x = 788,064,398,858.73 - Step 5: Solve for x
x = 788,064,398,858.73/986,747.94 - Step 6: Final answer
x = 798,648.13
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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.