Finding the Fourth Proportional to 5,430,432.80, 8,143,575.60 and 1,642,656.80
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Solution
The fourth proportional to 5,430,432.80, 8,143,575.60 and 1,642,656.80 is: 2,463,357.95
Step by Step Solution
- Step 1: Write the proportion equation
5,430,432.80 : 8,143,575.60 = 1,642,656.80 : x - Step 2: Convert to fraction form
5,430,432.80/8,143,575.60 = 1,642,656.80/x - Step 3: Cross multiply
5,430,432.80x = 8,143,575.60 × 1,642,656.80 - Step 4: Simplify right side
5,430,432.80x = 13,377,099,835,654.08 - Step 5: Solve for x
x = 13,377,099,835,654.08/5,430,432.80 - Step 6: Final answer
x = 2,463,357.95
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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.