Finding the Fourth Proportional to 485,622,331.80, 728,433,497.70 and 434,603,995.80
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Solution
The fourth proportional to 485,622,331.80, 728,433,497.70 and 434,603,995.80 is: 651,905,993.70
Step by Step Solution
- Step 1: Write the proportion equation
485,622,331.80 : 728,433,497.70 = 434,603,995.80 : x - Step 2: Convert to fraction form
485,622,331.80/728,433,497.70 = 434,603,995.80/x - Step 3: Cross multiply
485,622,331.80x = 728,433,497.70 × 434,603,995.80 - Step 4: Simplify right side
485,622,331.80x = 316,580,108,774,990,144 - Step 5: Solve for x
x = 316,580,108,774,990,144/485,622,331.80 - Step 6: Final answer
x = 651,905,993.70
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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.