Finding the Fourth Proportional to 3,219,263,992.80, 4,828,895,989.20 and 3,128,564,728.80
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Solution
The fourth proportional to 3,219,263,992.80, 4,828,895,989.20 and 3,128,564,728.80 is: 4,692,847,093.20
Step by Step Solution
- Step 1: Write the proportion equation
3,219,263,992.80 : 4,828,895,989.20 = 3,128,564,728.80 : x - Step 2: Convert to fraction form
3,219,263,992.80/4,828,895,989.20 = 3,128,564,728.80/x - Step 3: Cross multiply
3,219,263,992.80x = 4,828,895,989.20 × 3,128,564,728.80 - Step 4: Simplify right side
3,219,263,992.80x = 15,107,513,670,854,905,856 - Step 5: Solve for x
x = 15,107,513,670,854,905,856/3,219,263,992.80 - Step 6: Final answer
x = 4,692,847,093.20
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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.