Finding the Fourth Proportional to 1,679,620,233.60, 2,519,430,350.40 and 861,815,203.20
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Solution
The fourth proportional to 1,679,620,233.60, 2,519,430,350.40 and 861,815,203.20 is: 1,292,722,804.80
Step by Step Solution
- Step 1: Write the proportion equation
1,679,620,233.60 : 2,519,430,350.40 = 861,815,203.20 : x - Step 2: Convert to fraction form
1,679,620,233.60/2,519,430,350.40 = 861,815,203.20/x - Step 3: Cross multiply
1,679,620,233.60x = 2,519,430,350.40 × 861,815,203.20 - Step 4: Simplify right side
1,679,620,233.60x = 2,171,283,379,378,223,360 - Step 5: Solve for x
x = 2,171,283,379,378,223,360/1,679,620,233.60 - Step 6: Final answer
x = 1,292,722,804.80
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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.