Finding the Fourth Proportional to 639,013,749,740.94, 881,866,694,604.78 and 353,872,269,836.94
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Solution
The fourth proportional to 639,013,749,740.94, 881,866,694,604.78 and 353,872,269,836.94 is: 488,359,083,102.53
Step by Step Solution
- Step 1: Write the proportion equation
639,013,749,740.94 : 881,866,694,604.78 = 353,872,269,836.94 : x - Step 2: Convert to fraction form
639,013,749,740.94/881,866,694,604.78 = 353,872,269,836.94/x - Step 3: Cross multiply
639,013,749,740.94x = 881,866,694,604.78 × 353,872,269,836.94 - Step 4: Simplify right side
639,013,749,740.94x = 312,068,168,913,393,048,092,672 - Step 5: Solve for x
x = 312,068,168,913,393,048,092,672/639,013,749,740.94 - Step 6: Final answer
x = 488,359,083,102.53
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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.