Finding the Fourth Proportional to 1,257,768,984.80, 1,888,354,088.40 and 798,603,960.80
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Solution
The fourth proportional to 1,257,768,984.80, 1,888,354,088.40 and 798,603,960.80 is: 1,198,985,722.03
Step by Step Solution
- Step 1: Write the proportion equation
1,257,768,984.80 : 1,888,354,088.40 = 798,603,960.80 : x - Step 2: Convert to fraction form
1,257,768,984.80/1,888,354,088.40 = 798,603,960.80/x - Step 3: Cross multiply
1,257,768,984.80x = 1,888,354,088.40 × 798,603,960.80 - Step 4: Simplify right side
1,257,768,984.80x = 1,508,047,054,389,113,344 - Step 5: Solve for x
x = 1,508,047,054,389,113,344/1,257,768,984.80 - Step 6: Final answer
x = 1,198,985,722.03
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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.