Finding the Fourth Proportional to 1,383,739.08, 1,909,556.78 and 780,122.76
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Solution
The fourth proportional to 1,383,739.08, 1,909,556.78 and 780,122.76 is: 1,076,567.63
Step by Step Solution
- Step 1: Write the proportion equation
1,383,739.08 : 1,909,556.78 = 780,122.76 : x - Step 2: Convert to fraction form
1,383,739.08/1,909,556.78 = 780,122.76/x - Step 3: Cross multiply
1,383,739.08x = 1,909,556.78 × 780,122.76 - Step 4: Simplify right side
1,383,739.08x = 1,489,688,705,590.31 - Step 5: Solve for x
x = 1,489,688,705,590.31/1,383,739.08 - Step 6: Final answer
x = 1,076,567.63
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.