Finding the Fourth Proportional to 1,457,400.12, 2,011,215.74 and 812,862.06
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Solution
The fourth proportional to 1,457,400.12, 2,011,215.74 and 812,862.06 is: 1,121,751.63
Step by Step Solution
- Step 1: Write the proportion equation
1,457,400.12 : 2,011,215.74 = 812,862.06 : x - Step 2: Convert to fraction form
1,457,400.12/2,011,215.74 = 812,862.06/x - Step 3: Cross multiply
1,457,400.12x = 2,011,215.74 × 812,862.06 - Step 4: Simplify right side
1,457,400.12x = 1,634,840,965,456.51 - Step 5: Solve for x
x = 1,634,840,965,456.51/1,457,400.12 - Step 6: Final answer
x = 1,121,751.63
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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.