Finding the Fourth Proportional to 1,457,568.42, 2,011,439.16 and 812,988.11
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Solution
The fourth proportional to 1,457,568.42, 2,011,439.16 and 812,988.11 is: 1,121,920.65
Step by Step Solution
- Step 1: Write the proportion equation
1,457,568.42 : 2,011,439.16 = 812,988.11 : x - Step 2: Convert to fraction form
1,457,568.42/2,011,439.16 = 812,988.11/x - Step 3: Cross multiply
1,457,568.42x = 2,011,439.16 × 812,988.11 - Step 4: Simplify right side
1,457,568.42x = 1,635,276,111,011.19 - Step 5: Solve for x
x = 1,635,276,111,011.19/1,457,568.42 - Step 6: Final answer
x = 1,121,920.65
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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.