Finding the Fourth Proportional to 872,815.62, 1,204,379.76 and 485,539.53
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Solution
The fourth proportional to 872,815.62, 1,204,379.76 and 485,539.53 is: 669,985.70
Step by Step Solution
- Step 1: Write the proportion equation
872,815.62 : 1,204,379.76 = 485,539.53 : x - Step 2: Convert to fraction form
872,815.62/1,204,379.76 = 485,539.53/x - Step 3: Cross multiply
872,815.62x = 1,204,379.76 × 485,539.53 - Step 4: Simplify right side
872,815.62x = 584,773,982,611.91 - Step 5: Solve for x
x = 584,773,982,611.91/872,815.62 - Step 6: Final answer
x = 669,985.70
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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.