Finding the Fourth Proportional to 5,420,026.80, 8,130,783.77 and 3,146,618.43
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Solution
The fourth proportional to 5,420,026.80, 8,130,783.77 and 3,146,618.43 is: 4,720,359.32
Step by Step Solution
- Step 1: Write the proportion equation
5,420,026.80 : 8,130,783.77 = 3,146,618.43 : x - Step 2: Convert to fraction form
5,420,026.80/8,130,783.77 = 3,146,618.43/x - Step 3: Cross multiply
5,420,026.80x = 8,130,783.77 × 3,146,618.43 - Step 4: Simplify right side
5,420,026.80x = 25,584,474,020,372.96 - Step 5: Solve for x
x = 25,584,474,020,372.96/5,420,026.80 - Step 6: Final answer
x = 4,720,359.32
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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.