Finding the Fourth Proportional to 1,432,875.76, 1,977,651.20 and 821,439.12
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Solution
The fourth proportional to 1,432,875.76, 1,977,651.20 and 821,439.12 is: 1,133,748.02
Step by Step Solution
- Step 1: Write the proportion equation
1,432,875.76 : 1,977,651.20 = 821,439.12 : x - Step 2: Convert to fraction form
1,432,875.76/1,977,651.20 = 821,439.12/x - Step 3: Cross multiply
1,432,875.76x = 1,977,651.20 × 821,439.12 - Step 4: Simplify right side
1,432,875.76x = 1,624,520,061,394.94 - Step 5: Solve for x
x = 1,624,520,061,394.94/1,432,875.76 - Step 6: Final answer
x = 1,133,748.02
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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.