Finding the Fourth Proportional to 1,979,421.80, 2,968,841.10 and 559,621.40
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Solution
The fourth proportional to 1,979,421.80, 2,968,841.10 and 559,621.40 is: 839,349.66
Step by Step Solution
- Step 1: Write the proportion equation
1,979,421.80 : 2,968,841.10 = 559,621.40 : x - Step 2: Convert to fraction form
1,979,421.80/2,968,841.10 = 559,621.40/x - Step 3: Cross multiply
1,979,421.80x = 2,968,841.10 × 559,621.40 - Step 4: Simplify right side
1,979,421.80x = 1,661,427,012,759.54 - Step 5: Solve for x
x = 1,661,427,012,759.54/1,979,421.80 - Step 6: Final answer
x = 839,349.66
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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.