Finding the Fourth Proportional to 1,138,688,615.42, 1,708,107,868.58 and 298,351,935.74
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Solution
The fourth proportional to 1,138,688,615.42, 1,708,107,868.58 and 298,351,935.74 is: 447,547,540.34
Step by Step Solution
- Step 1: Write the proportion equation
1,138,688,615.42 : 1,708,107,868.58 = 298,351,935.74 : x - Step 2: Convert to fraction form
1,138,688,615.42/1,708,107,868.58 = 298,351,935.74/x - Step 3: Cross multiply
1,138,688,615.42x = 1,708,107,868.58 × 298,351,935.74 - Step 4: Simplify right side
1,138,688,615.42x = 509,617,289,043,568,512 - Step 5: Solve for x
x = 509,617,289,043,568,512/1,138,688,615.42 - Step 6: Final answer
x = 447,547,540.34
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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.