Finding the Fourth Proportional to 387,749,853.20, 580,617,010.20 and 306,456,438.80
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Solution
The fourth proportional to 387,749,853.20, 580,617,010.20 and 306,456,438.80 is: 458,888,171.80
Step by Step Solution
- Step 1: Write the proportion equation
387,749,853.20 : 580,617,010.20 = 306,456,438.80 : x - Step 2: Convert to fraction form
387,749,853.20/580,617,010.20 = 306,456,438.80/x - Step 3: Cross multiply
387,749,853.20x = 580,617,010.20 × 306,456,438.80 - Step 4: Simplify right side
387,749,853.20x = 177,933,821,252,595,296 - Step 5: Solve for x
x = 177,933,821,252,595,296/387,749,853.20 - Step 6: Final answer
x = 458,888,171.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.