Finding the Fourth Proportional to 457,427.80, 686,141.70 and 307,739.80
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Solution
The fourth proportional to 457,427.80, 686,141.70 and 307,739.80 is: 461,609.70
Step by Step Solution
- Step 1: Write the proportion equation
457,427.80 : 686,141.70 = 307,739.80 : x - Step 2: Convert to fraction form
457,427.80/686,141.70 = 307,739.80/x - Step 3: Cross multiply
457,427.80x = 686,141.70 × 307,739.80 - Step 4: Simplify right side
457,427.80x = 211,153,109,529.66 - Step 5: Solve for x
x = 211,153,109,529.66/457,427.80 - Step 6: Final answer
x = 461,609.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.