Finding the Fourth Proportional to 4,147,985.70, 6,221,978.55 and 3,308,177.70
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Solution
The fourth proportional to 4,147,985.70, 6,221,978.55 and 3,308,177.70 is: 4,962,266.55
Step by Step Solution
- Step 1: Write the proportion equation
4,147,985.70 : 6,221,978.55 = 3,308,177.70 : x - Step 2: Convert to fraction form
4,147,985.70/6,221,978.55 = 3,308,177.70/x - Step 3: Cross multiply
4,147,985.70x = 6,221,978.55 × 3,308,177.70 - Step 4: Simplify right side
4,147,985.70x = 20,583,410,688,988.34 - Step 5: Solve for x
x = 20,583,410,688,988.34/4,147,985.70 - Step 6: Final answer
x = 4,962,266.55
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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.