Finding the Fourth Proportional to 7,685,703,889.91, 11,530,128,217.59 and 2,642,905,423.78
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Solution
The fourth proportional to 7,685,703,889.91, 11,530,128,217.59 and 2,642,905,423.78 is: 3,964,898,835.50
Step by Step Solution
- Step 1: Write the proportion equation
7,685,703,889.91 : 11,530,128,217.59 = 2,642,905,423.78 : x - Step 2: Convert to fraction form
7,685,703,889.91/11,530,128,217.59 = 2,642,905,423.78/x - Step 3: Cross multiply
7,685,703,889.91x = 11,530,128,217.59 × 2,642,905,423.78 - Step 4: Simplify right side
7,685,703,889.91x = 30,473,038,403,125,526,528 - Step 5: Solve for x
x = 30,473,038,403,125,526,528/7,685,703,889.91 - Step 6: Final answer
x = 3,964,898,835.50
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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.