Finding the Fourth Proportional to 2,115,188.48, 2,918,995.20 and 1,148,318.72
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Solution
The fourth proportional to 2,115,188.48, 2,918,995.20 and 1,148,318.72 is: 1,584,698.89
Step by Step Solution
- Step 1: Write the proportion equation
2,115,188.48 : 2,918,995.20 = 1,148,318.72 : x - Step 2: Convert to fraction form
2,115,188.48/2,918,995.20 = 1,148,318.72/x - Step 3: Cross multiply
2,115,188.48x = 2,918,995.20 × 1,148,318.72 - Step 4: Simplify right side
2,115,188.48x = 3,351,936,831,750.14 - Step 5: Solve for x
x = 3,351,936,831,750.14/2,115,188.48 - Step 6: Final answer
x = 1,584,698.89
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.