Finding the Fourth Proportional to 1,991,642.96, 2,748,454.80 and 1,132,203.08
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Solution
The fourth proportional to 1,991,642.96, 2,748,454.80 and 1,132,203.08 is: 1,562,433.15
Step by Step Solution
- Step 1: Write the proportion equation
1,991,642.96 : 2,748,454.80 = 1,132,203.08 : x - Step 2: Convert to fraction form
1,991,642.96/2,748,454.80 = 1,132,203.08/x - Step 3: Cross multiply
1,991,642.96x = 2,748,454.80 × 1,132,203.08 - Step 4: Simplify right side
1,991,642.96x = 3,111,808,989,800.78 - Step 5: Solve for x
x = 3,111,808,989,800.78/1,991,642.96 - Step 6: Final answer
x = 1,562,433.15
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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.