Finding the Fourth Proportional to 769,132.79, 1,061,424.66 and 424,990.99
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Solution
The fourth proportional to 769,132.79, 1,061,424.66 and 424,990.99 is: 586,499.39
Step by Step Solution
- Step 1: Write the proportion equation
769,132.79 : 1,061,424.66 = 424,990.99 : x - Step 2: Convert to fraction form
769,132.79/1,061,424.66 = 424,990.99/x - Step 3: Cross multiply
769,132.79x = 1,061,424.66 × 424,990.99 - Step 4: Simplify right side
769,132.79x = 451,095,909,631.74 - Step 5: Solve for x
x = 451,095,909,631.74/769,132.79 - Step 6: Final answer
x = 586,499.39
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Double scale
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1.5x scale
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.