Finding the Fourth Proportional to 665,280,658.70, 997,920,988.05 and 276,974,434.70
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Solution
The fourth proportional to 665,280,658.70, 997,920,988.05 and 276,974,434.70 is: 415,461,652.05
Step by Step Solution
- Step 1: Write the proportion equation
665,280,658.70 : 997,920,988.05 = 276,974,434.70 : x - Step 2: Convert to fraction form
665,280,658.70/997,920,988.05 = 276,974,434.70/x - Step 3: Cross multiply
665,280,658.70x = 997,920,988.05 × 276,974,434.70 - Step 4: Simplify right side
665,280,658.70x = 276,398,601,540,414,176 - Step 5: Solve for x
x = 276,398,601,540,414,176/665,280,658.70 - Step 6: Final answer
x = 415,461,652.05
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Double scale
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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.