Finding the Fourth Proportional to 718,432.62, 990,407.09 and 565,205.09
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Solution
The fourth proportional to 718,432.62, 990,407.09 and 565,205.09 is: 779,172.75
Step by Step Solution
- Step 1: Write the proportion equation
718,432.62 : 990,407.09 = 565,205.09 : x - Step 2: Convert to fraction form
718,432.62/990,407.09 = 565,205.09/x - Step 3: Cross multiply
718,432.62x = 990,407.09 × 565,205.09 - Step 4: Simplify right side
718,432.62x = 559,783,120,662.03 - Step 5: Solve for x
x = 559,783,120,662.03/718,432.62 - Step 6: Final answer
x = 779,172.75
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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.