Finding the Fourth Proportional to 1,150,873,209.99, 1,588,202,042.58 and 642,230,590.12
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Solution
The fourth proportional to 1,150,873,209.99, 1,588,202,042.58 and 642,230,590.12 is: 886,276,547.40
Step by Step Solution
- Step 1: Write the proportion equation
1,150,873,209.99 : 1,588,202,042.58 = 642,230,590.12 : x - Step 2: Convert to fraction form
1,150,873,209.99/1,588,202,042.58 = 642,230,590.12/x - Step 3: Cross multiply
1,150,873,209.99x = 1,588,202,042.58 × 642,230,590.12 - Step 4: Simplify right side
1,150,873,209.99x = 1,019,991,935,040,897,792 - Step 5: Solve for x
x = 1,019,991,935,040,897,792/1,150,873,209.99 - Step 6: Final answer
x = 886,276,547.40
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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.