Finding the Fourth Proportional to 5,178,929,458.13, 7,146,909,209.73 and 2,890,037,668.73
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Solution
The fourth proportional to 5,178,929,458.13, 7,146,909,209.73 and 2,890,037,668.73 is: 3,988,244,481.43
Step by Step Solution
- Step 1: Write the proportion equation
5,178,929,458.13 : 7,146,909,209.73 = 2,890,037,668.73 : x - Step 2: Convert to fraction form
5,178,929,458.13/7,146,909,209.73 = 2,890,037,668.73/x - Step 3: Cross multiply
5,178,929,458.13x = 7,146,909,209.73 × 2,890,037,668.73 - Step 4: Simplify right side
5,178,929,458.13x = 20,654,836,831,113,056,256 - Step 5: Solve for x
x = 20,654,836,831,113,056,256/5,178,929,458.13 - Step 6: Final answer
x = 3,988,244,481.43
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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.