Finding the Fourth Proportional to 1,578,245.20, 2,368,339.80 and 680,117.20
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Solution
The fourth proportional to 1,578,245.20, 2,368,339.80 and 680,117.20 is: 1,020,594.67
Step by Step Solution
- Step 1: Write the proportion equation
1,578,245.20 : 2,368,339.80 = 680,117.20 : x - Step 2: Convert to fraction form
1,578,245.20/2,368,339.80 = 680,117.20/x - Step 3: Cross multiply
1,578,245.20x = 2,368,339.80 × 680,117.20 - Step 4: Simplify right side
1,578,245.20x = 1,610,748,633,424.56 - Step 5: Solve for x
x = 1,610,748,633,424.56/1,578,245.20 - Step 6: Final answer
x = 1,020,594.67
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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.