Finding the Fourth Proportional to 669,969.60, 1,004,637.60 and 389,572.80
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Solution
The fourth proportional to 669,969.60, 1,004,637.60 and 389,572.80 is: 584,174.99
Step by Step Solution
- Step 1: Write the proportion equation
669,969.60 : 1,004,637.60 = 389,572.80 : x - Step 2: Convert to fraction form
669,969.60/1,004,637.60 = 389,572.80/x - Step 3: Cross multiply
669,969.60x = 1,004,637.60 × 389,572.80 - Step 4: Simplify right side
669,969.60x = 391,379,482,817.28 - Step 5: Solve for x
x = 391,379,482,817.28/669,969.60 - Step 6: Final answer
x = 584,174.99
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.