Finding the Fourth Proportional to 812,121.68, 1,120,714.32 and 449,537.74
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Solution
The fourth proportional to 812,121.68, 1,120,714.32 and 449,537.74 is: 620,354.55
Step by Step Solution
- Step 1: Write the proportion equation
812,121.68 : 1,120,714.32 = 449,537.74 : x - Step 2: Convert to fraction form
812,121.68/1,120,714.32 = 449,537.74/x - Step 3: Cross multiply
812,121.68x = 1,120,714.32 × 449,537.74 - Step 4: Simplify right side
812,121.68x = 503,803,381,482.42 - Step 5: Solve for x
x = 503,803,381,482.42/812,121.68 - Step 6: Final answer
x = 620,354.55
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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.