Finding the Fourth Proportional to 450,143,988.28, 621,224,883.42 and 251,903,771.80
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Solution
The fourth proportional to 450,143,988.28, 621,224,883.42 and 251,903,771.80 is: 347,641,855.37
Step by Step Solution
- Step 1: Write the proportion equation
450,143,988.28 : 621,224,883.42 = 251,903,771.80 : x - Step 2: Convert to fraction form
450,143,988.28/621,224,883.42 = 251,903,771.80/x - Step 3: Cross multiply
450,143,988.28x = 621,224,883.42 × 251,903,771.80 - Step 4: Simplify right side
450,143,988.28x = 156,488,891,269,513,280 - Step 5: Solve for x
x = 156,488,891,269,513,280/450,143,988.28 - Step 6: Final answer
x = 347,641,855.37
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.