Finding the Fourth Proportional to 638,386.75, 880,979.61 and 351,917.07
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Solution
The fourth proportional to 638,386.75, 880,979.61 and 351,917.07 is: 485,648.81
Step by Step Solution
- Step 1: Write the proportion equation
638,386.75 : 880,979.61 = 351,917.07 : x - Step 2: Convert to fraction form
638,386.75/880,979.61 = 351,917.07/x - Step 3: Cross multiply
638,386.75x = 880,979.61 × 351,917.07 - Step 4: Simplify right side
638,386.75x = 310,031,763,080.94 - Step 5: Solve for x
x = 310,031,763,080.94/638,386.75 - Step 6: Final answer
x = 485,648.81
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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.