Finding the Fourth Proportional to 2,378,638.38, 3,282,522.65 and 1,290,909.70
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Solution
The fourth proportional to 2,378,638.38, 3,282,522.65 and 1,290,909.70 is: 1,781,456.30
Step by Step Solution
- Step 1: Write the proportion equation
2,378,638.38 : 3,282,522.65 = 1,290,909.70 : x - Step 2: Convert to fraction form
2,378,638.38/3,282,522.65 = 1,290,909.70/x - Step 3: Cross multiply
2,378,638.38x = 3,282,522.65 × 1,290,909.70 - Step 4: Simplify right side
2,378,638.38x = 4,237,440,329,354.70 - Step 5: Solve for x
x = 4,237,440,329,354.70/2,378,638.38 - Step 6: Final answer
x = 1,781,456.30
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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.