Finding the Fourth Proportional to 1,919,117.60, 2,879,065.20 and 657,072.80
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Solution
The fourth proportional to 1,919,117.60, 2,879,065.20 and 657,072.80 is: 985,742.32
Step by Step Solution
- Step 1: Write the proportion equation
1,919,117.60 : 2,879,065.20 = 657,072.80 : x - Step 2: Convert to fraction form
1,919,117.60/2,879,065.20 = 657,072.80/x - Step 3: Cross multiply
1,919,117.60x = 2,879,065.20 × 657,072.80 - Step 4: Simplify right side
1,919,117.60x = 1,891,755,432,346.56 - Step 5: Solve for x
x = 1,891,755,432,346.56/1,919,117.60 - Step 6: Final answer
x = 985,742.32
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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.