Finding the Fourth Proportional to 485,625.70, 728,438.55 and 485,625.70
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Solution
The fourth proportional to 485,625.70, 728,438.55 and 485,625.70 is: 728,438.55
Step by Step Solution
- Step 1: Write the proportion equation
485,625.70 : 728,438.55 = 485,625.70 : x - Step 2: Convert to fraction form
485,625.70/728,438.55 = 485,625.70/x - Step 3: Cross multiply
485,625.70x = 728,438.55 × 485,625.70 - Step 4: Simplify right side
485,625.70x = 353,748,480,750.74 - Step 5: Solve for x
x = 353,748,480,750.74/485,625.70 - Step 6: Final answer
x = 728,438.55
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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.