Finding the Fourth Proportional to 542,178.18, 748,235.85 and 300,455.70
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Solution
The fourth proportional to 542,178.18, 748,235.85 and 300,455.70 is: 414,645.47
Step by Step Solution
- Step 1: Write the proportion equation
542,178.18 : 748,235.85 = 300,455.70 : x - Step 2: Convert to fraction form
542,178.18/748,235.85 = 300,455.70/x - Step 3: Cross multiply
542,178.18x = 748,235.85 × 300,455.70 - Step 4: Simplify right side
542,178.18x = 224,811,726,076.85 - Step 5: Solve for x
x = 224,811,726,076.85/542,178.18 - Step 6: Final answer
x = 414,645.47
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1.5x scale
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.