Finding the Fourth Proportional to 861,782.17, 1,189,259.40 and 499,276.09
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Solution
The fourth proportional to 861,782.17, 1,189,259.40 and 499,276.09 is: 689,001.01
Step by Step Solution
- Step 1: Write the proportion equation
861,782.17 : 1,189,259.40 = 499,276.09 : x - Step 2: Convert to fraction form
861,782.17/1,189,259.40 = 499,276.09/x - Step 3: Cross multiply
861,782.17x = 1,189,259.40 × 499,276.09 - Step 4: Simplify right side
861,782.17x = 593,768,783,227.75 - Step 5: Solve for x
x = 593,768,783,227.75/861,782.17 - Step 6: Final answer
x = 689,001.01
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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.