Finding the Fourth Proportional to 752,297,840.80, 1,128,446,761.20 and 199,599,200.80
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Solution
The fourth proportional to 752,297,840.80, 1,128,446,761.20 and 199,599,200.80 is: 299,398,801.20
Step by Step Solution
- Step 1: Write the proportion equation
752,297,840.80 : 1,128,446,761.20 = 199,599,200.80 : x - Step 2: Convert to fraction form
752,297,840.80/1,128,446,761.20 = 199,599,200.80/x - Step 3: Cross multiply
752,297,840.80x = 1,128,446,761.20 × 199,599,200.80 - Step 4: Simplify right side
752,297,840.80x = 225,237,071,680,868,480 - Step 5: Solve for x
x = 225,237,071,680,868,480/752,297,840.80 - Step 6: Final answer
x = 299,398,801.20
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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.