Finding the Fourth Proportional to 621,121,514.20, 930,891,014.70 and 330,128,042.20
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Solution
The fourth proportional to 621,121,514.20, 930,891,014.70 and 330,128,042.20 is: 494,771,507.92
Step by Step Solution
- Step 1: Write the proportion equation
621,121,514.20 : 930,891,014.70 = 330,128,042.20 : x - Step 2: Convert to fraction form
621,121,514.20/930,891,014.70 = 330,128,042.20/x - Step 3: Cross multiply
621,121,514.20x = 930,891,014.70 × 330,128,042.20 - Step 4: Simplify right side
621,121,514.20x = 307,313,228,184,482,432 - Step 5: Solve for x
x = 307,313,228,184,482,432/621,121,514.20 - Step 6: Final answer
x = 494,771,507.92
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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.