Finding the Fourth Proportional to 679,908.44, 938,291.32 and 373,992.70
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Solution
The fourth proportional to 679,908.44, 938,291.32 and 373,992.70 is: 516,119.65
Step by Step Solution
- Step 1: Write the proportion equation
679,908.44 : 938,291.32 = 373,992.70 : x - Step 2: Convert to fraction form
679,908.44/938,291.32 = 373,992.70/x - Step 3: Cross multiply
679,908.44x = 938,291.32 × 373,992.70 - Step 4: Simplify right side
679,908.44x = 350,914,104,153.36 - Step 5: Solve for x
x = 350,914,104,153.36/679,908.44 - Step 6: Final answer
x = 516,119.65
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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.