Finding the Fourth Proportional to 1,478,851.40, 2,218,269.90 and 579,657.80
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Solution
The fourth proportional to 1,478,851.40, 2,218,269.90 and 579,657.80 is: 869,483.88
Step by Step Solution
- Step 1: Write the proportion equation
1,478,851.40 : 2,218,269.90 = 579,657.80 : x - Step 2: Convert to fraction form
1,478,851.40/2,218,269.90 = 579,657.80/x - Step 3: Cross multiply
1,478,851.40x = 2,218,269.90 × 579,657.80 - Step 4: Simplify right side
1,478,851.40x = 1,285,837,450,040.22 - Step 5: Solve for x
x = 1,285,837,450,040.22/1,478,851.40 - Step 6: Final answer
x = 869,483.88
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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.