Finding the Fourth Proportional to 664,580,403.60, 997,768,150.20 and 388,514,518.80
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Solution
The fourth proportional to 664,580,403.60, 997,768,150.20 and 388,514,518.80 is: 583,296,483.99
Step by Step Solution
- Step 1: Write the proportion equation
664,580,403.60 : 997,768,150.20 = 388,514,518.80 : x - Step 2: Convert to fraction form
664,580,403.60/997,768,150.20 = 388,514,518.80/x - Step 3: Cross multiply
664,580,403.60x = 997,768,150.20 × 388,514,518.80 - Step 4: Simplify right side
664,580,403.60x = 387,647,412,748,919,168 - Step 5: Solve for x
x = 387,647,412,748,919,168/664,580,403.60 - Step 6: Final answer
x = 583,296,483.99
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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.