Finding the Fourth Proportional to 1,991,950.72, 2,748,780.48 and 1,132,391.68
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Solution
The fourth proportional to 1,991,950.72, 2,748,780.48 and 1,132,391.68 is: 1,562,637.12
Step by Step Solution
- Step 1: Write the proportion equation
1,991,950.72 : 2,748,780.48 = 1,132,391.68 : x - Step 2: Convert to fraction form
1,991,950.72/2,748,780.48 = 1,132,391.68/x - Step 3: Cross multiply
1,991,950.72x = 2,748,780.48 × 1,132,391.68 - Step 4: Simplify right side
1,991,950.72x = 3,112,696,145,698.41 - Step 5: Solve for x
x = 3,112,696,145,698.41/1,991,950.72 - Step 6: Final answer
x = 1,562,637.12
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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.