Finding the Fourth Proportional to 1,214,386.92, 1,819,143.90 and 1,115,178.12
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Solution
The fourth proportional to 1,214,386.92, 1,819,143.90 and 1,115,178.12 is: 1,670,529.75
Step by Step Solution
- Step 1: Write the proportion equation
1,214,386.92 : 1,819,143.90 = 1,115,178.12 : x - Step 2: Convert to fraction form
1,214,386.92/1,819,143.90 = 1,115,178.12/x - Step 3: Cross multiply
1,214,386.92x = 1,819,143.90 × 1,115,178.12 - Step 4: Simplify right side
1,214,386.92x = 2,028,669,474,411.47 - Step 5: Solve for x
x = 2,028,669,474,411.47/1,214,386.92 - Step 6: Final answer
x = 1,670,529.75
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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.