Finding the Fourth Proportional to 1,323,139,621.80, 1,984,709,432.70 and 886,649,413.80
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Solution
The fourth proportional to 1,323,139,621.80, 1,984,709,432.70 and 886,649,413.80 is: 1,329,974,120.70
Step by Step Solution
- Step 1: Write the proportion equation
1,323,139,621.80 : 1,984,709,432.70 = 886,649,413.80 : x - Step 2: Convert to fraction form
1,323,139,621.80/1,984,709,432.70 = 886,649,413.80/x - Step 3: Cross multiply
1,323,139,621.80x = 1,984,709,432.70 × 886,649,413.80 - Step 4: Simplify right side
1,323,139,621.80x = 1,759,741,455,066,785,536 - Step 5: Solve for x
x = 1,759,741,455,066,785,536/1,323,139,621.80 - Step 6: Final answer
x = 1,329,974,120.70
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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.