Finding the Fourth Proportional to 1,261,056.60, 1,740,283.38 and 688,120.92
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Solution
The fourth proportional to 1,261,056.60, 1,740,283.38 and 688,120.92 is: 949,620.66
Step by Step Solution
- Step 1: Write the proportion equation
1,261,056.60 : 1,740,283.38 = 688,120.92 : x - Step 2: Convert to fraction form
1,261,056.60/1,740,283.38 = 688,120.92/x - Step 3: Cross multiply
1,261,056.60x = 1,740,283.38 × 688,120.92 - Step 4: Simplify right side
1,261,056.60x = 1,197,525,400,506.31 - Step 5: Solve for x
x = 1,197,525,400,506.31/1,261,056.60 - Step 6: Final answer
x = 949,620.66
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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.