Finding the Fourth Proportional to 611,690.70, 858,138.45 and 611,690.70
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Solution
The fourth proportional to 611,690.70, 858,138.45 and 611,690.70 is: 858,138.45
Step by Step Solution
- Step 1: Write the proportion equation
611,690.70 : 858,138.45 = 611,690.70 : x - Step 2: Convert to fraction form
611,690.70/858,138.45 = 611,690.70/x - Step 3: Cross multiply
611,690.70x = 858,138.45 × 611,690.70 - Step 4: Simplify right side
611,690.70x = 524,915,309,177.42 - Step 5: Solve for x
x = 524,915,309,177.42/611,690.70 - Step 6: Final answer
x = 858,138.45
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.