Finding the Fourth Proportional to 613,214.36, 920,414.76 and 442,611.96
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Solution
The fourth proportional to 613,214.36, 920,414.76 and 442,611.96 is: 664,346.12
Step by Step Solution
- Step 1: Write the proportion equation
613,214.36 : 920,414.76 = 442,611.96 : x - Step 2: Convert to fraction form
613,214.36/920,414.76 = 442,611.96/x - Step 3: Cross multiply
613,214.36x = 920,414.76 × 442,611.96 - Step 4: Simplify right side
613,214.36x = 407,386,580,936.53 - Step 5: Solve for x
x = 407,386,580,936.53/613,214.36 - Step 6: Final answer
x = 664,346.12
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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.