Finding the Fourth Proportional to 857,029.08, 1,182,784.76 and 489,561.21
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Solution
The fourth proportional to 857,029.08, 1,182,784.76 and 489,561.21 is: 675,642.82
Step by Step Solution
- Step 1: Write the proportion equation
857,029.08 : 1,182,784.76 = 489,561.21 : x - Step 2: Convert to fraction form
857,029.08/1,182,784.76 = 489,561.21/x - Step 3: Cross multiply
857,029.08x = 1,182,784.76 × 489,561.21 - Step 4: Simplify right side
857,029.08x = 579,045,537,949.61 - Step 5: Solve for x
x = 579,045,537,949.61/857,029.08 - Step 6: Final answer
x = 675,642.82
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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.