Finding the Fourth Proportional to 1,438,197.40, 2,155,240.02 and 1,056,120.40
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Solution
The fourth proportional to 1,438,197.40, 2,155,240.02 and 1,056,120.40 is: 1,582,670.75
Step by Step Solution
- Step 1: Write the proportion equation
1,438,197.40 : 2,155,240.02 = 1,056,120.40 : x - Step 2: Convert to fraction form
1,438,197.40/2,155,240.02 = 1,056,120.40/x - Step 3: Cross multiply
1,438,197.40x = 2,155,240.02 × 1,056,120.40 - Step 4: Simplify right side
1,438,197.40x = 2,276,192,952,018.41 - Step 5: Solve for x
x = 2,276,192,952,018.41/1,438,197.40 - Step 6: Final answer
x = 1,582,670.75
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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.