Finding the Fourth Proportional to 821,547.23, 1,232,307.47 and 316,217.97
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Solution
The fourth proportional to 821,547.23, 1,232,307.47 and 316,217.97 is: 474,321.81
Step by Step Solution
- Step 1: Write the proportion equation
821,547.23 : 1,232,307.47 = 316,217.97 : x - Step 2: Convert to fraction form
821,547.23/1,232,307.47 = 316,217.97/x - Step 3: Cross multiply
821,547.23x = 1,232,307.47 × 316,217.97 - Step 4: Simplify right side
821,547.23x = 389,677,764,998.15 - Step 5: Solve for x
x = 389,677,764,998.15/821,547.23 - Step 6: Final answer
x = 474,321.81
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.