Finding the Fourth Proportional to 1,272,457.42, 1,908,636.26 and 431,009.14
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Solution
The fourth proportional to 1,272,457.42, 1,908,636.26 and 431,009.14 is: 646,496.82
Step by Step Solution
- Step 1: Write the proportion equation
1,272,457.42 : 1,908,636.26 = 431,009.14 : x - Step 2: Convert to fraction form
1,272,457.42/1,908,636.26 = 431,009.14/x - Step 3: Cross multiply
1,272,457.42x = 1,908,636.26 × 431,009.14 - Step 4: Simplify right side
1,272,457.42x = 822,639,672,995.42 - Step 5: Solve for x
x = 822,639,672,995.42/1,272,457.42 - Step 6: Final answer
x = 646,496.82
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.