Finding the Fourth Proportional to 665,280,649.70, 997,920,974.55 and 276,974,425.70
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Solution
The fourth proportional to 665,280,649.70, 997,920,974.55 and 276,974,425.70 is: 415,461,638.55
Step by Step Solution
- Step 1: Write the proportion equation
665,280,649.70 : 997,920,974.55 = 276,974,425.70 : x - Step 2: Convert to fraction form
665,280,649.70/997,920,974.55 = 276,974,425.70/x - Step 3: Cross multiply
665,280,649.70x = 997,920,974.55 × 276,974,425.70 - Step 4: Simplify right side
665,280,649.70x = 276,398,588,819,970,528 - Step 5: Solve for x
x = 276,398,588,819,970,528/665,280,649.70 - Step 6: Final answer
x = 415,461,638.55
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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.