Finding the Fourth Proportional to 1,115,784,148.84, 1,541,905,734.77 and 836,841,396.76
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Solution
The fourth proportional to 1,115,784,148.84, 1,541,905,734.77 and 836,841,396.76 is: 1,156,433,840.80
Step by Step Solution
- Step 1: Write the proportion equation
1,115,784,148.84 : 1,541,905,734.77 = 836,841,396.76 : x - Step 2: Convert to fraction form
1,115,784,148.84/1,541,905,734.77 = 836,841,396.76/x - Step 3: Cross multiply
1,115,784,148.84x = 1,541,905,734.77 × 836,841,396.76 - Step 4: Simplify right side
1,115,784,148.84x = 1,290,330,548,749,142,016 - Step 5: Solve for x
x = 1,290,330,548,749,142,016/1,115,784,148.84 - Step 6: Final answer
x = 1,156,433,840.80
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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.