Finding the Fourth Proportional to 1,214,395.92, 1,819,157.40 and 1,115,187.12
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Solution
The fourth proportional to 1,214,395.92, 1,819,157.40 and 1,115,187.12 is: 1,670,543.25
Step by Step Solution
- Step 1: Write the proportion equation
1,214,395.92 : 1,819,157.40 = 1,115,187.12 : x - Step 2: Convert to fraction form
1,214,395.92/1,819,157.40 = 1,115,187.12/x - Step 3: Cross multiply
1,214,395.92x = 1,819,157.40 × 1,115,187.12 - Step 4: Simplify right side
1,214,395.92x = 2,028,700,901,732.69 - Step 5: Solve for x
x = 2,028,700,901,732.69/1,214,395.92 - Step 6: Final answer
x = 1,670,543.25
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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.