Finding the Fourth Proportional to 7,128,497.80, 10,692,746.70 and 2,080,318.60
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Solution
The fourth proportional to 7,128,497.80, 10,692,746.70 and 2,080,318.60 is: 3,120,477.90
Step by Step Solution
- Step 1: Write the proportion equation
7,128,497.80 : 10,692,746.70 = 2,080,318.60 : x - Step 2: Convert to fraction form
7,128,497.80/10,692,746.70 = 2,080,318.60/x - Step 3: Cross multiply
7,128,497.80x = 10,692,746.70 × 2,080,318.60 - Step 4: Simplify right side
7,128,497.80x = 22,244,319,845,098.62 - Step 5: Solve for x
x = 22,244,319,845,098.62/7,128,497.80 - Step 6: Final answer
x = 3,120,477.90
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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.