Finding the Fourth Proportional to 1,518,128.80, 2,276,901.60 and 453,205.60
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Solution
The fourth proportional to 1,518,128.80, 2,276,901.60 and 453,205.60 is: 679,721.35
Step by Step Solution
- Step 1: Write the proportion equation
1,518,128.80 : 2,276,901.60 = 453,205.60 : x - Step 2: Convert to fraction form
1,518,128.80/2,276,901.60 = 453,205.60/x - Step 3: Cross multiply
1,518,128.80x = 2,276,901.60 × 453,205.60 - Step 4: Simplify right side
1,518,128.80x = 1,031,904,555,768.96 - Step 5: Solve for x
x = 1,031,904,555,768.96/1,518,128.80 - Step 6: Final answer
x = 679,721.35
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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.