Finding the Fourth Proportional to 1,347,698.70, 2,021,548.05 and 639,110.70
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Solution
The fourth proportional to 1,347,698.70, 2,021,548.05 and 639,110.70 is: 958,666.05
Step by Step Solution
- Step 1: Write the proportion equation
1,347,698.70 : 2,021,548.05 = 639,110.70 : x - Step 2: Convert to fraction form
1,347,698.70/2,021,548.05 = 639,110.70/x - Step 3: Cross multiply
1,347,698.70x = 2,021,548.05 × 639,110.70 - Step 4: Simplify right side
1,347,698.70x = 1,291,992,989,319.14 - Step 5: Solve for x
x = 1,291,992,989,319.14/1,347,698.70 - Step 6: Final answer
x = 958,666.05
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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.