Finding the Fourth Proportional to 1,678,480.47, 2,315,313.96 and 1,187,898.09
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Solution
The fourth proportional to 1,678,480.47, 2,315,313.96 and 1,187,898.09 is: 1,638,599.36
Step by Step Solution
- Step 1: Write the proportion equation
1,678,480.47 : 2,315,313.96 = 1,187,898.09 : x - Step 2: Convert to fraction form
1,678,480.47/2,315,313.96 = 1,187,898.09/x - Step 3: Cross multiply
1,678,480.47x = 2,315,313.96 × 1,187,898.09 - Step 4: Simplify right side
1,678,480.47x = 2,750,357,030,834.34 - Step 5: Solve for x
x = 2,750,357,030,834.34/1,678,480.47 - Step 6: Final answer
x = 1,638,599.36
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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.