Finding the Fourth Proportional to 1,291,988.19, 1,782,926.37 and 719,028.21
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Solution
The fourth proportional to 1,291,988.19, 1,782,926.37 and 719,028.21 is: 992,249.28
Step by Step Solution
- Step 1: Write the proportion equation
1,291,988.19 : 1,782,926.37 = 719,028.21 : x - Step 2: Convert to fraction form
1,291,988.19/1,782,926.37 = 719,028.21/x - Step 3: Cross multiply
1,291,988.19x = 1,782,926.37 × 719,028.21 - Step 4: Simplify right side
1,291,988.19x = 1,281,974,356,382.90 - Step 5: Solve for x
x = 1,281,974,356,382.90/1,291,988.19 - Step 6: Final answer
x = 992,249.28
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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.