Finding the Fourth Proportional to 5,381,845.76, 7,427,472 and 4,021,356.80
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Solution
The fourth proportional to 5,381,845.76, 7,427,472 and 4,021,356.80 is: 5,549,864.56
Step by Step Solution
- Step 1: Write the proportion equation
5,381,845.76 : 7,427,472 = 4,021,356.80 : x - Step 2: Convert to fraction form
5,381,845.76/7,427,472 = 4,021,356.80/x - Step 3: Cross multiply
5,381,845.76x = 7,427,472 × 4,021,356.80 - Step 4: Simplify right side
5,381,845.76x = 29,868,515,034,009.60 - Step 5: Solve for x
x = 29,868,515,034,009.60/5,381,845.76 - Step 6: Final answer
x = 5,549,864.56
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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.