Finding the Fourth Proportional to 6,391,210,886.21, 8,820,143,408.97 and 3,571,818,728.93
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Solution
The fourth proportional to 6,391,210,886.21, 8,820,143,408.97 and 3,571,818,728.93 is: 4,929,262,072.69
Step by Step Solution
- Step 1: Write the proportion equation
6,391,210,886.21 : 8,820,143,408.97 = 3,571,818,728.93 : x - Step 2: Convert to fraction form
6,391,210,886.21/8,820,143,408.97 = 3,571,818,728.93/x - Step 3: Cross multiply
6,391,210,886.21x = 8,820,143,408.97 × 3,571,818,728.93 - Step 4: Simplify right side
6,391,210,886.21x = 31,503,953,419,963,441,152 - Step 5: Solve for x
x = 31,503,953,419,963,441,152/6,391,210,886.21 - Step 6: Final answer
x = 4,929,262,072.69
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1.5x scale
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.