Finding the Fourth Proportional to 664,457.80, 996,686.70 and 243,897.70
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Solution
The fourth proportional to 664,457.80, 996,686.70 and 243,897.70 is: 365,846.55
Step by Step Solution
- Step 1: Write the proportion equation
664,457.80 : 996,686.70 = 243,897.70 : x - Step 2: Convert to fraction form
664,457.80/996,686.70 = 243,897.70/x - Step 3: Cross multiply
664,457.80x = 996,686.70 × 243,897.70 - Step 4: Simplify right side
664,457.80x = 243,089,593,750.59 - Step 5: Solve for x
x = 243,089,593,750.59/664,457.80 - Step 6: Final answer
x = 365,846.55
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Double scale
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Similar ratio
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1.5x scale
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.