Finding the Fourth Proportional to 1,603,826,189.47, 2,213,240,636.49 and 889,357,794.80
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Solution
The fourth proportional to 1,603,826,189.47, 2,213,240,636.49 and 889,357,794.80 is: 1,227,291,850.43
Step by Step Solution
- Step 1: Write the proportion equation
1,603,826,189.47 : 2,213,240,636.49 = 889,357,794.80 : x - Step 2: Convert to fraction form
1,603,826,189.47/2,213,240,636.49 = 889,357,794.80/x - Step 3: Cross multiply
1,603,826,189.47x = 2,213,240,636.49 × 889,357,794.80 - Step 4: Simplify right side
1,603,826,189.47x = 1,968,362,811,830,494,464 - Step 5: Solve for x
x = 1,968,362,811,830,494,464/1,603,826,189.47 - Step 6: Final answer
x = 1,227,291,850.43
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.