Finding the Fourth Proportional to 708,590,908.80, 1,062,886,363.20 and 486,661,147.20
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Solution
The fourth proportional to 708,590,908.80, 1,062,886,363.20 and 486,661,147.20 is: 729,991,720.80
Step by Step Solution
- Step 1: Write the proportion equation
708,590,908.80 : 1,062,886,363.20 = 486,661,147.20 : x - Step 2: Convert to fraction form
708,590,908.80/1,062,886,363.20 = 486,661,147.20/x - Step 3: Cross multiply
708,590,908.80x = 1,062,886,363.20 × 486,661,147.20 - Step 4: Simplify right side
708,590,908.80x = 517,265,496,858,147,904 - Step 5: Solve for x
x = 517,265,496,858,147,904/708,590,908.80 - Step 6: Final answer
x = 729,991,720.80
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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.