Finding the Fourth Proportional to 646,811,621.60, 970,217,432.40 and 237,783,135.20
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Solution
The fourth proportional to 646,811,621.60, 970,217,432.40 and 237,783,135.20 is: 356,674,702.80
Step by Step Solution
- Step 1: Write the proportion equation
646,811,621.60 : 970,217,432.40 = 237,783,135.20 : x - Step 2: Convert to fraction form
646,811,621.60/970,217,432.40 = 237,783,135.20/x - Step 3: Cross multiply
646,811,621.60x = 970,217,432.40 × 237,783,135.20 - Step 4: Simplify right side
646,811,621.60x = 230,701,342,901,766,048 - Step 5: Solve for x
x = 230,701,342,901,766,048/646,811,621.60 - Step 6: Final answer
x = 356,674,702.80
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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.