Finding the Fourth Proportional to 7,128,865.36, 10,693,926.42 and 2,011,340.08
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Solution
The fourth proportional to 7,128,865.36, 10,693,926.42 and 2,011,340.08 is: 3,017,187.41
Step by Step Solution
- Step 1: Write the proportion equation
7,128,865.36 : 10,693,926.42 = 2,011,340.08 : x - Step 2: Convert to fraction form
7,128,865.36/10,693,926.42 = 2,011,340.08/x - Step 3: Cross multiply
7,128,865.36x = 10,693,926.42 × 2,011,340.08 - Step 4: Simplify right side
7,128,865.36x = 21,509,122,821,116.91 - Step 5: Solve for x
x = 21,509,122,821,116.91/7,128,865.36 - Step 6: Final answer
x = 3,017,187.41
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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.