Finding the Fourth Proportional to 1,478,990.99, 2,215,086.64 and 939,206.99
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Solution
The fourth proportional to 1,478,990.99, 2,215,086.64 and 939,206.99 is: 1,406,651.47
Step by Step Solution
- Step 1: Write the proportion equation
1,478,990.99 : 2,215,086.64 = 939,206.99 : x - Step 2: Convert to fraction form
1,478,990.99/2,215,086.64 = 939,206.99/x - Step 3: Cross multiply
1,478,990.99x = 2,215,086.64 × 939,206.99 - Step 4: Simplify right side
1,478,990.99x = 2,080,424,855,743.61 - Step 5: Solve for x
x = 2,080,424,855,743.61/1,478,990.99 - Step 6: Final answer
x = 1,406,651.47
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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.