Finding the Fourth Proportional to 1,931,135.70, 2,664,350.79 and 1,115,231.64
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Solution
The fourth proportional to 1,931,135.70, 2,664,350.79 and 1,115,231.64 is: 1,538,663.65
Step by Step Solution
- Step 1: Write the proportion equation
1,931,135.70 : 2,664,350.79 = 1,115,231.64 : x - Step 2: Convert to fraction form
1,931,135.70/2,664,350.79 = 1,115,231.64/x - Step 3: Cross multiply
1,931,135.70x = 2,664,350.79 × 1,115,231.64 - Step 4: Simplify right side
1,931,135.70x = 2,971,368,301,067.00 - Step 5: Solve for x
x = 2,971,368,301,067.00/1,931,135.70 - Step 6: Final answer
x = 1,538,663.65
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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.