Finding the Fourth Proportional to 1,561,420.80, 2,345,630.40 and 1,497,657.60
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Solution
The fourth proportional to 1,561,420.80, 2,345,630.40 and 1,497,657.60 is: 2,249,842.70
Step by Step Solution
- Step 1: Write the proportion equation
1,561,420.80 : 2,345,630.40 = 1,497,657.60 : x - Step 2: Convert to fraction form
1,561,420.80/2,345,630.40 = 1,497,657.60/x - Step 3: Cross multiply
1,561,420.80x = 2,345,630.40 × 1,497,657.60 - Step 4: Simplify right side
1,561,420.80x = 3,512,951,195,351.04 - Step 5: Solve for x
x = 3,512,951,195,351.04/1,561,420.80 - Step 6: Final answer
x = 2,249,842.70
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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.