Finding the Fourth Proportional to 749,719.09, 1,121,962.44 and 613,205.18
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Solution
The fourth proportional to 749,719.09, 1,121,962.44 and 613,205.18 is: 917,667.95
Step by Step Solution
- Step 1: Write the proportion equation
749,719.09 : 1,121,962.44 = 613,205.18 : x - Step 2: Convert to fraction form
749,719.09/1,121,962.44 = 613,205.18/x - Step 3: Cross multiply
749,719.09x = 1,121,962.44 × 613,205.18 - Step 4: Simplify right side
749,719.09x = 687,993,183,732.27 - Step 5: Solve for x
x = 687,993,183,732.27/749,719.09 - Step 6: Final answer
x = 917,667.95
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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.