Finding the Fourth Proportional to 1,576,220.11, 2,174,428.70 and 1,515,110.47
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Solution
The fourth proportional to 1,576,220.11, 2,174,428.70 and 1,515,110.47 is: 2,090,126.67
Step by Step Solution
- Step 1: Write the proportion equation
1,576,220.11 : 2,174,428.70 = 1,515,110.47 : x - Step 2: Convert to fraction form
1,576,220.11/2,174,428.70 = 1,515,110.47/x - Step 3: Cross multiply
1,576,220.11x = 2,174,428.70 × 1,515,110.47 - Step 4: Simplify right side
1,576,220.11x = 3,294,499,682,308.53 - Step 5: Solve for x
x = 3,294,499,682,308.53/1,576,220.11 - Step 6: Final answer
x = 2,090,126.67
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1.5x scale
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.