Finding the Fourth Proportional to 1,271,447,613.80, 1,907,171,420.70 and 927,073,845.80
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Solution
The fourth proportional to 1,271,447,613.80, 1,907,171,420.70 and 927,073,845.80 is: 1,390,610,768.70
Step by Step Solution
- Step 1: Write the proportion equation
1,271,447,613.80 : 1,907,171,420.70 = 927,073,845.80 : x - Step 2: Convert to fraction form
1,271,447,613.80/1,907,171,420.70 = 927,073,845.80/x - Step 3: Cross multiply
1,271,447,613.80x = 1,907,171,420.70 × 927,073,845.80 - Step 4: Simplify right side
1,271,447,613.80x = 1,768,088,743,588,198,656 - Step 5: Solve for x
x = 1,768,088,743,588,198,656/1,271,447,613.80 - Step 6: Final answer
x = 1,390,610,768.70
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1.5x scale
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.