Finding the Fourth Proportional to 1,387,871.68, 2,081,808.24 and 390,599.68
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Solution
The fourth proportional to 1,387,871.68, 2,081,808.24 and 390,599.68 is: 585,899.72
Step by Step Solution
- Step 1: Write the proportion equation
1,387,871.68 : 2,081,808.24 = 390,599.68 : x - Step 2: Convert to fraction form
1,387,871.68/2,081,808.24 = 390,599.68/x - Step 3: Cross multiply
1,387,871.68x = 2,081,808.24 × 390,599.68 - Step 4: Simplify right side
1,387,871.68x = 813,153,632,365.36 - Step 5: Solve for x
x = 813,153,632,365.36/1,387,871.68 - Step 6: Final answer
x = 585,899.72
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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.