Finding the Fourth Proportional to 1,312,116.14, 1,968,796.30 and 780,687.02
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Solution
The fourth proportional to 1,312,116.14, 1,968,796.30 and 780,687.02 is: 1,171,400.66
Step by Step Solution
- Step 1: Write the proportion equation
1,312,116.14 : 1,968,796.30 = 780,687.02 : x - Step 2: Convert to fraction form
1,312,116.14/1,968,796.30 = 780,687.02/x - Step 3: Cross multiply
1,312,116.14x = 1,968,796.30 × 780,687.02 - Step 4: Simplify right side
1,312,116.14x = 1,537,013,716,434.03 - Step 5: Solve for x
x = 1,537,013,716,434.03/1,312,116.14 - Step 6: Final answer
x = 1,171,400.66
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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.