Finding the Fourth Proportional to 1,451,962,138.80, 2,178,793,513.80 and 531,931,479.60
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Solution
The fourth proportional to 1,451,962,138.80, 2,178,793,513.80 and 531,931,479.60 is: 798,208,731.87
Step by Step Solution
- Step 1: Write the proportion equation
1,451,962,138.80 : 2,178,793,513.80 = 531,931,479.60 : x - Step 2: Convert to fraction form
1,451,962,138.80/2,178,793,513.80 = 531,931,479.60/x - Step 3: Cross multiply
1,451,962,138.80x = 2,178,793,513.80 × 531,931,479.60 - Step 4: Simplify right side
1,451,962,138.80x = 1,158,968,857,538,517,248 - Step 5: Solve for x
x = 1,158,968,857,538,517,248/1,451,962,138.80 - Step 6: Final answer
x = 798,208,731.87
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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.