Finding the Fourth Proportional to 566,391.40, 781,614.12 and 311,737.12
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Solution
The fourth proportional to 566,391.40, 781,614.12 and 311,737.12 is: 430,193.92
Step by Step Solution
- Step 1: Write the proportion equation
566,391.40 : 781,614.12 = 311,737.12 : x - Step 2: Convert to fraction form
566,391.40/781,614.12 = 311,737.12/x - Step 3: Cross multiply
566,391.40x = 781,614.12 × 311,737.12 - Step 4: Simplify right side
566,391.40x = 243,658,134,720.13 - Step 5: Solve for x
x = 243,658,134,720.13/566,391.40 - Step 6: Final answer
x = 430,193.92
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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.