Finding the Fourth Proportional to 622,813.40, 859,303.35 and 405,342.23
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Solution
The fourth proportional to 622,813.40, 859,303.35 and 405,342.23 is: 559,255.68
Step by Step Solution
- Step 1: Write the proportion equation
622,813.40 : 859,303.35 = 405,342.23 : x - Step 2: Convert to fraction form
622,813.40/859,303.35 = 405,342.23/x - Step 3: Cross multiply
622,813.40x = 859,303.35 × 405,342.23 - Step 4: Simplify right side
622,813.40x = 348,311,931,838.95 - Step 5: Solve for x
x = 348,311,931,838.95/622,813.40 - Step 6: Final answer
x = 559,255.68
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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.