Finding the Fourth Proportional to 2,143,695.60, 3,215,560.68 and 778,434.48
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Solution
The fourth proportional to 2,143,695.60, 3,215,560.68 and 778,434.48 is: 1,167,657.99
Step by Step Solution
- Step 1: Write the proportion equation
2,143,695.60 : 3,215,560.68 = 778,434.48 : x - Step 2: Convert to fraction form
2,143,695.60/3,215,560.68 = 778,434.48/x - Step 3: Cross multiply
2,143,695.60x = 3,215,560.68 × 778,434.48 - Step 4: Simplify right side
2,143,695.60x = 2,503,103,305,844.25 - Step 5: Solve for x
x = 2,503,103,305,844.25/2,143,695.60 - Step 6: Final answer
x = 1,167,657.99
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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.