Finding the Fourth Proportional to 1,420,775.91, 2,129,675.31 and 661,991.72
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Solution
The fourth proportional to 1,420,775.91, 2,129,675.31 and 661,991.72 is: 992,294.00
Step by Step Solution
- Step 1: Write the proportion equation
1,420,775.91 : 2,129,675.31 = 661,991.72 : x - Step 2: Convert to fraction form
1,420,775.91/2,129,675.31 = 661,991.72/x - Step 3: Cross multiply
1,420,775.91x = 2,129,675.31 × 661,991.72 - Step 4: Simplify right side
1,420,775.91x = 1,409,827,410,860.06 - Step 5: Solve for x
x = 1,409,827,410,860.06/1,420,775.91 - Step 6: Final answer
x = 992,294.00
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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.