Finding the Fourth Proportional to 812,764,821.12, 1,121,614,599.60 and 441,487,142.88
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Solution
The fourth proportional to 812,764,821.12, 1,121,614,599.60 and 441,487,142.88 is: 609,251,793.54
Step by Step Solution
- Step 1: Write the proportion equation
812,764,821.12 : 1,121,614,599.60 = 441,487,142.88 : x - Step 2: Convert to fraction form
812,764,821.12/1,121,614,599.60 = 441,487,142.88/x - Step 3: Cross multiply
812,764,821.12x = 1,121,614,599.60 × 441,487,142.88 - Step 4: Simplify right side
812,764,821.12x = 495,178,424,989,899,136 - Step 5: Solve for x
x = 495,178,424,989,899,136/812,764,821.12 - Step 6: Final answer
x = 609,251,793.54
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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.