Finding the Fourth Proportional to 3,120,288,130, 4,680,366,621.08 and 759,462,259.92
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Solution
The fourth proportional to 3,120,288,130, 4,680,366,621.08 and 759,462,259.92 is: 1,139,177,429.52
Step by Step Solution
- Step 1: Write the proportion equation
3,120,288,130 : 4,680,366,621.08 = 759,462,259.92 : x - Step 2: Convert to fraction form
3,120,288,130/4,680,366,621.08 = 759,462,259.92/x - Step 3: Cross multiply
3,120,288,130x = 4,680,366,621.08 × 759,462,259.92 - Step 4: Simplify right side
3,120,288,130x = 3,554,561,811,299,550,720 - Step 5: Solve for x
x = 3,554,561,811,299,550,720/3,120,288,130 - Step 6: Final answer
x = 1,139,177,429.52
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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.