Finding the Fourth Proportional to 1,028,665.23, 1,543,142.40 and 429,490.09
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Solution
The fourth proportional to 1,028,665.23, 1,543,142.40 and 429,490.09 is: 644,295.49
Step by Step Solution
- Step 1: Write the proportion equation
1,028,665.23 : 1,543,142.40 = 429,490.09 : x - Step 2: Convert to fraction form
1,028,665.23/1,543,142.40 = 429,490.09/x - Step 3: Cross multiply
1,028,665.23x = 1,543,142.40 × 429,490.09 - Step 4: Simplify right side
1,028,665.23x = 662,764,368,258.82 - Step 5: Solve for x
x = 662,764,368,258.82/1,028,665.23 - Step 6: Final answer
x = 644,295.49
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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.