Finding the Fourth Proportional to 2,139,814.45, 2,953,246.08 and 1,324,280.80
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Solution
The fourth proportional to 2,139,814.45, 2,953,246.08 and 1,324,280.80 is: 1,827,694.49
Step by Step Solution
- Step 1: Write the proportion equation
2,139,814.45 : 2,953,246.08 = 1,324,280.80 : x - Step 2: Convert to fraction form
2,139,814.45/2,953,246.08 = 1,324,280.80/x - Step 3: Cross multiply
2,139,814.45x = 2,953,246.08 × 1,324,280.80 - Step 4: Simplify right side
2,139,814.45x = 3,910,927,081,419.26 - Step 5: Solve for x
x = 3,910,927,081,419.26/2,139,814.45 - Step 6: Final answer
x = 1,827,694.49
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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.