Finding the Fourth Proportional to 713,719.72, 984,945.81 and 391,426.99
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Solution
The fourth proportional to 713,719.72, 984,945.81 and 391,426.99 is: 540,176.15
Step by Step Solution
- Step 1: Write the proportion equation
713,719.72 : 984,945.81 = 391,426.99 : x - Step 2: Convert to fraction form
713,719.72/984,945.81 = 391,426.99/x - Step 3: Cross multiply
713,719.72x = 984,945.81 × 391,426.99 - Step 4: Simplify right side
713,719.72x = 385,534,373,721.41 - Step 5: Solve for x
x = 385,534,373,721.41/713,719.72 - Step 6: Final answer
x = 540,176.15
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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.