Finding the Fourth Proportional to 1,127,863.20, 1,556,307.36 and 644,459.79
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Solution
The fourth proportional to 1,127,863.20, 1,556,307.36 and 644,459.79 is: 889,272.31
Step by Step Solution
- Step 1: Write the proportion equation
1,127,863.20 : 1,556,307.36 = 644,459.79 : x - Step 2: Convert to fraction form
1,127,863.20/1,556,307.36 = 644,459.79/x - Step 3: Cross multiply
1,127,863.20x = 1,556,307.36 × 644,459.79 - Step 4: Simplify right side
1,127,863.20x = 1,002,977,514,401.05 - Step 5: Solve for x
x = 1,002,977,514,401.05/1,127,863.20 - Step 6: Final answer
x = 889,272.31
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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.