Finding the Fourth Proportional to 930,939.70, 1,396,409.55 and 458,547.70
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Solution
The fourth proportional to 930,939.70, 1,396,409.55 and 458,547.70 is: 687,821.55
Step by Step Solution
- Step 1: Write the proportion equation
930,939.70 : 1,396,409.55 = 458,547.70 : x - Step 2: Convert to fraction form
930,939.70/1,396,409.55 = 458,547.70/x - Step 3: Cross multiply
930,939.70x = 1,396,409.55 × 458,547.70 - Step 4: Simplify right side
930,939.70x = 640,320,387,410.54 - Step 5: Solve for x
x = 640,320,387,410.54/930,939.70 - Step 6: Final answer
x = 687,821.55
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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.