Finding the Fourth Proportional to 815,280.76, 1,125,119.82 and 471,105.28
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Solution
The fourth proportional to 815,280.76, 1,125,119.82 and 471,105.28 is: 650,143.99
Step by Step Solution
- Step 1: Write the proportion equation
815,280.76 : 1,125,119.82 = 471,105.28 : x - Step 2: Convert to fraction form
815,280.76/1,125,119.82 = 471,105.28/x - Step 3: Cross multiply
815,280.76x = 1,125,119.82 × 471,105.28 - Step 4: Simplify right side
815,280.76x = 530,049,887,834.65 - Step 5: Solve for x
x = 530,049,887,834.65/815,280.76 - Step 6: Final answer
x = 650,143.99
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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.