Finding the Fourth Proportional to 913,838,046.40, 1,370,757,069.60 and 874,031,147.20
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Solution
The fourth proportional to 913,838,046.40, 1,370,757,069.60 and 874,031,147.20 is: 1,311,046,720.80
Step by Step Solution
- Step 1: Write the proportion equation
913,838,046.40 : 1,370,757,069.60 = 874,031,147.20 : x - Step 2: Convert to fraction form
913,838,046.40/1,370,757,069.60 = 874,031,147.20/x - Step 3: Cross multiply
913,838,046.40x = 1,370,757,069.60 × 874,031,147.20 - Step 4: Simplify right side
913,838,046.40x = 1,198,084,374,074,998,272 - Step 5: Solve for x
x = 1,198,084,374,074,998,272/913,838,046.40 - Step 6: Final answer
x = 1,311,046,720.80
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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.