Finding the Fourth Proportional to 873,766,705.20, 1,310,650,057.80 and 798,939,812.40
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Solution
The fourth proportional to 873,766,705.20, 1,310,650,057.80 and 798,939,812.40 is: 1,198,409,718.60
Step by Step Solution
- Step 1: Write the proportion equation
873,766,705.20 : 1,310,650,057.80 = 798,939,812.40 : x - Step 2: Convert to fraction form
873,766,705.20/1,310,650,057.80 = 798,939,812.40/x - Step 3: Cross multiply
873,766,705.20x = 1,310,650,057.80 × 798,939,812.40 - Step 4: Simplify right side
873,766,705.20x = 1,047,130,511,300,781,056 - Step 5: Solve for x
x = 1,047,130,511,300,781,056/873,766,705.20 - Step 6: Final answer
x = 1,198,409,718.60
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Similar ratio
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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.