Finding the Fourth Proportional to 7,128,960.86, 10,694,772.55 and 3,238,691.18
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Solution
The fourth proportional to 7,128,960.86, 10,694,772.55 and 3,238,691.18 is: 4,858,641.55
Step by Step Solution
- Step 1: Write the proportion equation
7,128,960.86 : 10,694,772.55 = 3,238,691.18 : x - Step 2: Convert to fraction form
7,128,960.86/10,694,772.55 = 3,238,691.18/x - Step 3: Cross multiply
7,128,960.86x = 10,694,772.55 × 3,238,691.18 - Step 4: Simplify right side
7,128,960.86x = 34,637,065,462,147.97 - Step 5: Solve for x
x = 34,637,065,462,147.97/7,128,960.86 - Step 6: Final answer
x = 4,858,641.55
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.