Finding the Fourth Proportional to 561,785.13, 775,263.42 and 307,136.25
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Solution
The fourth proportional to 561,785.13, 775,263.42 and 307,136.25 is: 423,847.99
Step by Step Solution
- Step 1: Write the proportion equation
561,785.13 : 775,263.42 = 307,136.25 : x - Step 2: Convert to fraction form
561,785.13/775,263.42 = 307,136.25/x - Step 3: Cross multiply
561,785.13x = 775,263.42 × 307,136.25 - Step 4: Simplify right side
561,785.13x = 238,111,499,580.98 - Step 5: Solve for x
x = 238,111,499,580.98/561,785.13 - Step 6: Final answer
x = 423,847.99
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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.