Finding the Fourth Proportional to 1,319,590.49, 1,979,351.10 and 421,087.05
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Solution
The fourth proportional to 1,319,590.49, 1,979,351.10 and 421,087.05 is: 631,619.53
Step by Step Solution
- Step 1: Write the proportion equation
1,319,590.49 : 1,979,351.10 = 421,087.05 : x - Step 2: Convert to fraction form
1,319,590.49/1,979,351.10 = 421,087.05/x - Step 3: Cross multiply
1,319,590.49x = 1,979,351.10 × 421,087.05 - Step 4: Simplify right side
1,319,590.49x = 833,479,115,613.26 - Step 5: Solve for x
x = 833,479,115,613.26/1,319,590.49 - Step 6: Final answer
x = 631,619.53
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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.