Finding the Fourth Proportional to 1,189,316,698.80, 1,783,420,249.68 and 452,523,747.12
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Solution
The fourth proportional to 1,189,316,698.80, 1,783,420,249.68 and 452,523,747.12 is: 678,574,525.09
Step by Step Solution
- Step 1: Write the proportion equation
1,189,316,698.80 : 1,783,420,249.68 = 452,523,747.12 : x - Step 2: Convert to fraction form
1,189,316,698.80/1,783,420,249.68 = 452,523,747.12/x - Step 3: Cross multiply
1,189,316,698.80x = 1,783,420,249.68 × 452,523,747.12 - Step 4: Simplify right side
1,189,316,698.80x = 807,040,014,074,879,616 - Step 5: Solve for x
x = 807,040,014,074,879,616/1,189,316,698.80 - Step 6: Final answer
x = 678,574,525.09
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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.