Finding the Fourth Proportional to 1,031,129,135.22, 1,423,079,373.87 and 579,081,393.66
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Solution
The fourth proportional to 1,031,129,135.22, 1,423,079,373.87 and 579,081,393.66 is: 799,200,370.70
Step by Step Solution
- Step 1: Write the proportion equation
1,031,129,135.22 : 1,423,079,373.87 = 579,081,393.66 : x - Step 2: Convert to fraction form
1,031,129,135.22/1,423,079,373.87 = 579,081,393.66/x - Step 3: Cross multiply
1,031,129,135.22x = 1,423,079,373.87 × 579,081,393.66 - Step 4: Simplify right side
1,031,129,135.22x = 824,078,787,109,439,616 - Step 5: Solve for x
x = 824,078,787,109,439,616/1,031,129,135.22 - Step 6: Final answer
x = 799,200,370.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.