Finding the Fourth Proportional to 622,764.10, 859,574.77 and 405,515.02
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Solution
The fourth proportional to 622,764.10, 859,574.77 and 405,515.02 is: 559,715.12
Step by Step Solution
- Step 1: Write the proportion equation
622,764.10 : 859,574.77 = 405,515.02 : x - Step 2: Convert to fraction form
622,764.10/859,574.77 = 405,515.02/x - Step 3: Cross multiply
622,764.10x = 859,574.77 × 405,515.02 - Step 4: Simplify right side
622,764.10x = 348,570,480,048.05 - Step 5: Solve for x
x = 348,570,480,048.05/622,764.10 - Step 6: Final answer
x = 559,715.12
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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.