Finding the Fourth Proportional to 858,939.24, 1,288,146.40 and 409,423.28
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Solution
The fourth proportional to 858,939.24, 1,288,146.40 and 409,423.28 is: 614,009.82
Step by Step Solution
- Step 1: Write the proportion equation
858,939.24 : 1,288,146.40 = 409,423.28 : x - Step 2: Convert to fraction form
858,939.24/1,288,146.40 = 409,423.28/x - Step 3: Cross multiply
858,939.24x = 1,288,146.40 × 409,423.28 - Step 4: Simplify right side
858,939.24x = 527,397,124,208.19 - Step 5: Solve for x
x = 527,397,124,208.19/858,939.24 - Step 6: Final answer
x = 614,009.82
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.