Finding the Fourth Proportional to 921,985.14, 1,382,927.88 and 353,638.53
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Solution
The fourth proportional to 921,985.14, 1,382,927.88 and 353,638.53 is: 530,438.68
Step by Step Solution
- Step 1: Write the proportion equation
921,985.14 : 1,382,927.88 = 353,638.53 : x - Step 2: Convert to fraction form
921,985.14/1,382,927.88 = 353,638.53/x - Step 3: Cross multiply
921,985.14x = 1,382,927.88 × 353,638.53 - Step 4: Simplify right side
921,985.14x = 489,056,582,579.22 - Step 5: Solve for x
x = 489,056,582,579.22/921,985.14 - Step 6: Final answer
x = 530,438.68
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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.