Finding the Fourth Proportional to 713,782.02, 985,046.76 and 391,505.70
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Solution
The fourth proportional to 713,782.02, 985,046.76 and 391,505.70 is: 540,292.99
Step by Step Solution
- Step 1: Write the proportion equation
713,782.02 : 985,046.76 = 391,505.70 : x - Step 2: Convert to fraction form
713,782.02/985,046.76 = 391,505.70/x - Step 3: Cross multiply
713,782.02x = 985,046.76 × 391,505.70 - Step 4: Simplify right side
713,782.02x = 385,651,421,306.53 - Step 5: Solve for x
x = 385,651,421,306.53/713,782.02 - Step 6: Final answer
x = 540,292.99
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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.