Finding the Fourth Proportional to 637,706,737.40, 956,560,106.10 and 420,028,503.80
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Solution
The fourth proportional to 637,706,737.40, 956,560,106.10 and 420,028,503.80 is: 630,042,755.70
Step by Step Solution
- Step 1: Write the proportion equation
637,706,737.40 : 956,560,106.10 = 420,028,503.80 : x - Step 2: Convert to fraction form
637,706,737.40/956,560,106.10 = 420,028,503.80/x - Step 3: Cross multiply
637,706,737.40x = 956,560,106.10 × 420,028,503.80 - Step 4: Simplify right side
637,706,737.40x = 401,782,510,159,952,256 - Step 5: Solve for x
x = 401,782,510,159,952,256/637,706,737.40 - Step 6: Final answer
x = 630,042,755.70
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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.