Finding the Fourth Proportional to 656,579.99, 905,926.10 and 398,451.09
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Solution
The fourth proportional to 656,579.99, 905,926.10 and 398,451.09 is: 549,768.87
Step by Step Solution
- Step 1: Write the proportion equation
656,579.99 : 905,926.10 = 398,451.09 : x - Step 2: Convert to fraction form
656,579.99/905,926.10 = 398,451.09/x - Step 3: Cross multiply
656,579.99x = 905,926.10 × 398,451.09 - Step 4: Simplify right side
656,579.99x = 360,967,243,409.42 - Step 5: Solve for x
x = 360,967,243,409.42/656,579.99 - Step 6: Final answer
x = 549,768.87
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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.