Finding the Fourth Proportional to 1,689,235.29, 2,533,971.20 and 678,357.18
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Solution
The fourth proportional to 1,689,235.29, 2,533,971.20 and 678,357.18 is: 1,017,583.26
Step by Step Solution
- Step 1: Write the proportion equation
1,689,235.29 : 2,533,971.20 = 678,357.18 : x - Step 2: Convert to fraction form
1,689,235.29/2,533,971.20 = 678,357.18/x - Step 3: Cross multiply
1,689,235.29x = 2,533,971.20 × 678,357.18 - Step 4: Simplify right side
1,689,235.29x = 1,718,937,554,041.43 - Step 5: Solve for x
x = 1,718,937,554,041.43/1,689,235.29 - Step 6: Final answer
x = 1,017,583.26
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.