Finding the Fourth Proportional to 2,139,813.45, 2,953,244.70 and 1,324,279.80
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Solution
The fourth proportional to 2,139,813.45, 2,953,244.70 and 1,324,279.80 is: 1,827,693.11
Step by Step Solution
- Step 1: Write the proportion equation
2,139,813.45 : 2,953,244.70 = 1,324,279.80 : x - Step 2: Convert to fraction form
2,139,813.45/2,953,244.70 = 1,324,279.80/x - Step 3: Cross multiply
2,139,813.45x = 2,953,244.70 × 1,324,279.80 - Step 4: Simplify right side
2,139,813.45x = 3,910,922,300,667.06 - Step 5: Solve for x
x = 3,910,922,300,667.06/2,139,813.45 - Step 6: Final answer
x = 1,827,693.11
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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.