Finding the Fourth Proportional to 1,277,212,924.80, 1,915,819,387.20 and 550,201,636.80
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Solution
The fourth proportional to 1,277,212,924.80, 1,915,819,387.20 and 550,201,636.80 is: 825,302,455.20
Step by Step Solution
- Step 1: Write the proportion equation
1,277,212,924.80 : 1,915,819,387.20 = 550,201,636.80 : x - Step 2: Convert to fraction form
1,277,212,924.80/1,915,819,387.20 = 550,201,636.80/x - Step 3: Cross multiply
1,277,212,924.80x = 1,915,819,387.20 × 550,201,636.80 - Step 4: Simplify right side
1,277,212,924.80x = 1,054,086,962,650,612,864 - Step 5: Solve for x
x = 1,054,086,962,650,612,864/1,277,212,924.80 - Step 6: Final answer
x = 825,302,455.20
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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.