Finding the Fourth Proportional to 658,643.57, 987,239.02 and 430,844.62
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Solution
The fourth proportional to 658,643.57, 987,239.02 and 430,844.62 is: 645,791.81
Step by Step Solution
- Step 1: Write the proportion equation
658,643.57 : 987,239.02 = 430,844.62 : x - Step 2: Convert to fraction form
658,643.57/987,239.02 = 430,844.62/x - Step 3: Cross multiply
658,643.57x = 987,239.02 × 430,844.62 - Step 4: Simplify right side
658,643.57x = 425,346,619,534.77 - Step 5: Solve for x
x = 425,346,619,534.77/658,643.57 - Step 6: Final answer
x = 645,791.81
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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.