Finding the Fourth Proportional to 979,253.74, 1,351,023.73 and 639,918.82
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Solution
The fourth proportional to 979,253.74, 1,351,023.73 and 639,918.82 is: 882,861.59
Step by Step Solution
- Step 1: Write the proportion equation
979,253.74 : 1,351,023.73 = 639,918.82 : x - Step 2: Convert to fraction form
979,253.74/1,351,023.73 = 639,918.82/x - Step 3: Cross multiply
979,253.74x = 1,351,023.73 × 639,918.82 - Step 4: Simplify right side
979,253.74x = 864,545,507,716.04 - Step 5: Solve for x
x = 864,545,507,716.04/979,253.74 - Step 6: Final answer
x = 882,861.59
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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.