Finding the Fourth Proportional to 1,180,955,907.20, 1,771,424,529.60 and 307,555,587.20
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Solution
The fourth proportional to 1,180,955,907.20, 1,771,424,529.60 and 307,555,587.20 is: 461,330,950.68
Step by Step Solution
- Step 1: Write the proportion equation
1,180,955,907.20 : 1,771,424,529.60 = 307,555,587.20 : x - Step 2: Convert to fraction form
1,180,955,907.20/1,771,424,529.60 = 307,555,587.20/x - Step 3: Cross multiply
1,180,955,907.20x = 1,771,424,529.60 × 307,555,587.20 - Step 4: Simplify right side
1,180,955,907.20x = 544,811,511,381,611,712 - Step 5: Solve for x
x = 544,811,511,381,611,712/1,180,955,907.20 - Step 6: Final answer
x = 461,330,950.68
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Similar ratio
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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.