Finding the Fourth Proportional to 812,844.20, 1,220,053.26 and 392,415.08
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Solution
The fourth proportional to 812,844.20, 1,220,053.26 and 392,415.08 is: 589,002.54
Step by Step Solution
- Step 1: Write the proportion equation
812,844.20 : 1,220,053.26 = 392,415.08 : x - Step 2: Convert to fraction form
812,844.20/1,220,053.26 = 392,415.08/x - Step 3: Cross multiply
812,844.20x = 1,220,053.26 × 392,415.08 - Step 4: Simplify right side
812,844.20x = 478,767,297,627.16 - Step 5: Solve for x
x = 478,767,297,627.16/812,844.20 - Step 6: Final answer
x = 589,002.54
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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.