Finding the Fourth Proportional to 1,409,201.40, 2,112,246.90 and 778,567.80
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Solution
The fourth proportional to 1,409,201.40, 2,112,246.90 and 778,567.80 is: 1,166,992.47
Step by Step Solution
- Step 1: Write the proportion equation
1,409,201.40 : 2,112,246.90 = 778,567.80 : x - Step 2: Convert to fraction form
1,409,201.40/2,112,246.90 = 778,567.80/x - Step 3: Cross multiply
1,409,201.40x = 2,112,246.90 × 778,567.80 - Step 4: Simplify right side
1,409,201.40x = 1,644,527,421,989.82 - Step 5: Solve for x
x = 1,644,527,421,989.82/1,409,201.40 - Step 6: Final answer
x = 1,166,992.47
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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.