Finding the Fourth Proportional to 2,138,483.81, 3,207,729.87 and 519,245.82
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Solution
The fourth proportional to 2,138,483.81, 3,207,729.87 and 519,245.82 is: 778,869.74
Step by Step Solution
- Step 1: Write the proportion equation
2,138,483.81 : 3,207,729.87 = 519,245.82 : x - Step 2: Convert to fraction form
2,138,483.81/3,207,729.87 = 519,245.82/x - Step 3: Cross multiply
2,138,483.81x = 3,207,729.87 × 519,245.82 - Step 4: Simplify right side
2,138,483.81x = 1,665,600,326,686.64 - Step 5: Solve for x
x = 1,665,600,326,686.64/2,138,483.81 - Step 6: Final answer
x = 778,869.74
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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.