Finding the Fourth Proportional to 1,090,679.07, 1,636,765.98 and 380,707.05
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Solution
The fourth proportional to 1,090,679.07, 1,636,765.98 and 380,707.05 is: 571,321.45
Step by Step Solution
- Step 1: Write the proportion equation
1,090,679.07 : 1,636,765.98 = 380,707.05 : x - Step 2: Convert to fraction form
1,090,679.07/1,636,765.98 = 380,707.05/x - Step 3: Cross multiply
1,090,679.07x = 1,636,765.98 × 380,707.05 - Step 4: Simplify right side
1,090,679.07x = 623,128,347,786.16 - Step 5: Solve for x
x = 623,128,347,786.16/1,090,679.07 - Step 6: Final answer
x = 571,321.45
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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.