Finding the Fourth Proportional to 505,916.79, 698,137.75 and 279,547.71
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Solution
The fourth proportional to 505,916.79, 698,137.75 and 279,547.71 is: 385,760.69
Step by Step Solution
- Step 1: Write the proportion equation
505,916.79 : 698,137.75 = 279,547.71 : x - Step 2: Convert to fraction form
505,916.79/698,137.75 = 279,547.71/x - Step 3: Cross multiply
505,916.79x = 698,137.75 × 279,547.71 - Step 4: Simplify right side
505,916.79x = 195,162,809,277.05 - Step 5: Solve for x
x = 195,162,809,277.05/505,916.79 - Step 6: Final answer
x = 385,760.69
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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.