Finding the Fourth Proportional to 485,615.70, 728,423.55 and 373,511.70
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Solution
The fourth proportional to 485,615.70, 728,423.55 and 373,511.70 is: 560,267.55
Step by Step Solution
- Step 1: Write the proportion equation
485,615.70 : 728,423.55 = 373,511.70 : x - Step 2: Convert to fraction form
485,615.70/728,423.55 = 373,511.70/x - Step 3: Cross multiply
485,615.70x = 728,423.55 × 373,511.70 - Step 4: Simplify right side
485,615.70x = 272,074,718,480.54 - Step 5: Solve for x
x = 272,074,718,480.54/485,615.70 - Step 6: Final answer
x = 560,267.55
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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.