Finding the Fourth Proportional to 918,567.07, 1,377,107.09 and 287,155.87
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Solution
The fourth proportional to 918,567.07, 1,377,107.09 and 287,155.87 is: 430,501.37
Step by Step Solution
- Step 1: Write the proportion equation
918,567.07 : 1,377,107.09 = 287,155.87 : x - Step 2: Convert to fraction form
918,567.07/1,377,107.09 = 287,155.87/x - Step 3: Cross multiply
918,567.07x = 1,377,107.09 × 287,155.87 - Step 4: Simplify right side
918,567.07x = 395,444,383,076.34 - Step 5: Solve for x
x = 395,444,383,076.34/918,567.07 - Step 6: Final answer
x = 430,501.37
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1.5x scale
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.