Finding the Fourth Proportional to 1,912,633.61, 2,639,434.37 and 1,053,191.81
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Solution
The fourth proportional to 1,912,633.61, 2,639,434.37 and 1,053,191.81 is: 1,453,404.70
Step by Step Solution
- Step 1: Write the proportion equation
1,912,633.61 : 2,639,434.37 = 1,053,191.81 : x - Step 2: Convert to fraction form
1,912,633.61/2,639,434.37 = 1,053,191.81/x - Step 3: Cross multiply
1,912,633.61x = 2,639,434.37 × 1,053,191.81 - Step 4: Simplify right side
1,912,633.61x = 2,779,830,662,849.14 - Step 5: Solve for x
x = 2,779,830,662,849.14/1,912,633.61 - Step 6: Final answer
x = 1,453,404.70
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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.