Finding the Fourth Proportional to 664,392,972.80, 996,290,860.80 and 255,313,164.80
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Solution
The fourth proportional to 664,392,972.80, 996,290,860.80 and 255,313,164.80 is: 382,855,001.70
Step by Step Solution
- Step 1: Write the proportion equation
664,392,972.80 : 996,290,860.80 = 255,313,164.80 : x - Step 2: Convert to fraction form
664,392,972.80/996,290,860.80 = 255,313,164.80/x - Step 3: Cross multiply
664,392,972.80x = 996,290,860.80 × 255,313,164.80 - Step 4: Simplify right side
664,392,972.80x = 254,366,172,732,164,256 - Step 5: Solve for x
x = 254,366,172,732,164,256/664,392,972.80 - Step 6: Final answer
x = 382,855,001.70
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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.