Finding the Fourth Proportional to 1,067,812,529.94, 1,473,580,778.79 and 638,649,811.80
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Solution
The fourth proportional to 1,067,812,529.94, 1,473,580,778.79 and 638,649,811.80 is: 881,336,433.75
Step by Step Solution
- Step 1: Write the proportion equation
1,067,812,529.94 : 1,473,580,778.79 = 638,649,811.80 : x - Step 2: Convert to fraction form
1,067,812,529.94/1,473,580,778.79 = 638,649,811.80/x - Step 3: Cross multiply
1,067,812,529.94x = 1,473,580,778.79 × 638,649,811.80 - Step 4: Simplify right side
1,067,812,529.94x = 941,102,087,052,883,968 - Step 5: Solve for x
x = 941,102,087,052,883,968/1,067,812,529.94 - Step 6: Final answer
x = 881,336,433.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.