Finding the Fourth Proportional to 1,211,453.30, 1,815,211.65 and 1,010,686.70
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Solution
The fourth proportional to 1,211,453.30, 1,815,211.65 and 1,010,686.70 is: 1,514,387.94
Step by Step Solution
- Step 1: Write the proportion equation
1,211,453.30 : 1,815,211.65 = 1,010,686.70 : x - Step 2: Convert to fraction form
1,211,453.30/1,815,211.65 = 1,010,686.70/x - Step 3: Cross multiply
1,211,453.30x = 1,815,211.65 × 1,010,686.70 - Step 4: Simplify right side
1,211,453.30x = 1,834,610,272,340.06 - Step 5: Solve for x
x = 1,834,610,272,340.06/1,211,453.30 - Step 6: Final answer
x = 1,514,387.94
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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.