Finding the Fourth Proportional to 638,201.70, 880,718.35 and 351,721.79
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Solution
The fourth proportional to 638,201.70, 880,718.35 and 351,721.79 is: 485,376.07
Step by Step Solution
- Step 1: Write the proportion equation
638,201.70 : 880,718.35 = 351,721.79 : x - Step 2: Convert to fraction form
638,201.70/880,718.35 = 351,721.79/x - Step 3: Cross multiply
638,201.70x = 880,718.35 × 351,721.79 - Step 4: Simplify right side
638,201.70x = 309,767,834,547.85 - Step 5: Solve for x
x = 309,767,834,547.85/638,201.70 - Step 6: Final answer
x = 485,376.07
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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.