Finding the Fourth Proportional to 805,779.40, 1,207,211.10 and 384,125.80
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Solution
The fourth proportional to 805,779.40, 1,207,211.10 and 384,125.80 is: 575,493.65
Step by Step Solution
- Step 1: Write the proportion equation
805,779.40 : 1,207,211.10 = 384,125.80 : x - Step 2: Convert to fraction form
805,779.40/1,207,211.10 = 384,125.80/x - Step 3: Cross multiply
805,779.40x = 1,207,211.10 × 384,125.80 - Step 4: Simplify right side
805,779.40x = 463,720,929,556.38 - Step 5: Solve for x
x = 463,720,929,556.38/805,779.40 - Step 6: Final answer
x = 575,493.65
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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.