Finding the Fourth Proportional to 489,382.58, 675,585.36 and 328,178.78
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Solution
The fourth proportional to 489,382.58, 675,585.36 and 328,178.78 is: 453,045.92
Step by Step Solution
- Step 1: Write the proportion equation
489,382.58 : 675,585.36 = 328,178.78 : x - Step 2: Convert to fraction form
489,382.58/675,585.36 = 328,178.78/x - Step 3: Cross multiply
489,382.58x = 675,585.36 × 328,178.78 - Step 4: Simplify right side
489,382.58x = 221,712,779,230.66 - Step 5: Solve for x
x = 221,712,779,230.66/489,382.58 - Step 6: Final answer
x = 453,045.92
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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.