Finding the Fourth Proportional to 1,257,731.20, 1,735,675.68 and 684,769.60
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Solution
The fourth proportional to 1,257,731.20, 1,735,675.68 and 684,769.60 is: 944,985.65
Step by Step Solution
- Step 1: Write the proportion equation
1,257,731.20 : 1,735,675.68 = 684,769.60 : x - Step 2: Convert to fraction form
1,257,731.20/1,735,675.68 = 684,769.60/x - Step 3: Cross multiply
1,257,731.20x = 1,735,675.68 × 684,769.60 - Step 4: Simplify right side
1,257,731.20x = 1,188,537,941,123.33 - Step 5: Solve for x
x = 1,188,537,941,123.33/1,257,731.20 - Step 6: Final answer
x = 944,985.65
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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.