Finding the Fourth Proportional to 668,140.55, 921,817.26 and 377,724.06
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Solution
The fourth proportional to 668,140.55, 921,817.26 and 377,724.06 is: 521,136.70
Step by Step Solution
- Step 1: Write the proportion equation
668,140.55 : 921,817.26 = 377,724.06 : x - Step 2: Convert to fraction form
668,140.55/921,817.26 = 377,724.06/x - Step 3: Cross multiply
668,140.55x = 921,817.26 × 377,724.06 - Step 4: Simplify right side
668,140.55x = 348,192,558,025.28 - Step 5: Solve for x
x = 348,192,558,025.28/668,140.55 - Step 6: Final answer
x = 521,136.70
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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.