Finding the Fourth Proportional to 1,246,518.09, 1,720,995.41 and 782,008.70
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Solution
The fourth proportional to 1,246,518.09, 1,720,995.41 and 782,008.70 is: 1,079,674.17
Step by Step Solution
- Step 1: Write the proportion equation
1,246,518.09 : 1,720,995.41 = 782,008.70 : x - Step 2: Convert to fraction form
1,246,518.09/1,720,995.41 = 782,008.70/x - Step 3: Cross multiply
1,246,518.09x = 1,720,995.41 × 782,008.70 - Step 4: Simplify right side
1,246,518.09x = 1,345,833,389,537.58 - Step 5: Solve for x
x = 1,345,833,389,537.58/1,246,518.09 - Step 6: Final answer
x = 1,079,674.17
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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.