Finding the Fourth Proportional to 1,389,000.80, 2,080,390.80 and 829,128.80
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Solution
The fourth proportional to 1,389,000.80, 2,080,390.80 and 829,128.80 is: 1,241,836.53
Step by Step Solution
- Step 1: Write the proportion equation
1,389,000.80 : 2,080,390.80 = 829,128.80 : x - Step 2: Convert to fraction form
1,389,000.80/2,080,390.80 = 829,128.80/x - Step 3: Cross multiply
1,389,000.80x = 2,080,390.80 × 829,128.80 - Step 4: Simplify right side
1,389,000.80x = 1,724,911,927,535.04 - Step 5: Solve for x
x = 1,724,911,927,535.04/1,389,000.80 - Step 6: Final answer
x = 1,241,836.53
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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.