Finding the Fourth Proportional to 1,577,821.20, 2,365,176.60 and 778,448.40
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Solution
The fourth proportional to 1,577,821.20, 2,365,176.60 and 778,448.40 is: 1,166,905.31
Step by Step Solution
- Step 1: Write the proportion equation
1,577,821.20 : 2,365,176.60 = 778,448.40 : x - Step 2: Convert to fraction form
1,577,821.20/2,365,176.60 = 778,448.40/x - Step 3: Cross multiply
1,577,821.20x = 2,365,176.60 × 778,448.40 - Step 4: Simplify right side
1,577,821.20x = 1,841,167,939,987.44 - Step 5: Solve for x
x = 1,841,167,939,987.44/1,577,821.20 - Step 6: Final answer
x = 1,166,905.31
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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.