Finding the Fourth Proportional to 407,813.70, 611,720.55 and 407,813.70
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Solution
The fourth proportional to 407,813.70, 611,720.55 and 407,813.70 is: 611,720.55
Step by Step Solution
- Step 1: Write the proportion equation
407,813.70 : 611,720.55 = 407,813.70 : x - Step 2: Convert to fraction form
407,813.70/611,720.55 = 407,813.70/x - Step 3: Cross multiply
407,813.70x = 611,720.55 × 407,813.70 - Step 4: Simplify right side
407,813.70x = 249,468,020,861.54 - Step 5: Solve for x
x = 249,468,020,861.54/407,813.70 - Step 6: Final answer
x = 611,720.55
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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.