Finding the Fourth Proportional to 1,290,449.96, 1,780,866.66 and 709,718.01
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Solution
The fourth proportional to 1,290,449.96, 1,780,866.66 and 709,718.01 is: 979,435.99
Step by Step Solution
- Step 1: Write the proportion equation
1,290,449.96 : 1,780,866.66 = 709,718.01 : x - Step 2: Convert to fraction form
1,290,449.96/1,780,866.66 = 709,718.01/x - Step 3: Cross multiply
1,290,449.96x = 1,780,866.66 × 709,718.01 - Step 4: Simplify right side
1,290,449.96x = 1,263,913,137,993.74 - Step 5: Solve for x
x = 1,263,913,137,993.74/1,290,449.96 - Step 6: Final answer
x = 979,435.99
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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.