Finding the Fourth Proportional to 2,143,699.60, 3,215,566.68 and 778,438.48
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Solution
The fourth proportional to 2,143,699.60, 3,215,566.68 and 778,438.48 is: 1,167,663.99
Step by Step Solution
- Step 1: Write the proportion equation
2,143,699.60 : 3,215,566.68 = 778,438.48 : x - Step 2: Convert to fraction form
2,143,699.60/3,215,566.68 = 778,438.48/x - Step 3: Cross multiply
2,143,699.60x = 3,215,566.68 × 778,438.48 - Step 4: Simplify right side
2,143,699.60x = 2,503,120,838,717.85 - Step 5: Solve for x
x = 2,503,120,838,717.85/2,143,699.60 - Step 6: Final answer
x = 1,167,663.99
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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.