Finding the Fourth Proportional to 623,699,229.80, 935,548,844.70 and 430,207,466.60
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Solution
The fourth proportional to 623,699,229.80, 935,548,844.70 and 430,207,466.60 is: 645,311,199.90
Step by Step Solution
- Step 1: Write the proportion equation
623,699,229.80 : 935,548,844.70 = 430,207,466.60 : x - Step 2: Convert to fraction form
623,699,229.80/935,548,844.70 = 430,207,466.60/x - Step 3: Cross multiply
623,699,229.80x = 935,548,844.70 × 430,207,466.60 - Step 4: Simplify right side
623,699,229.80x = 402,480,098,358,943,872 - Step 5: Solve for x
x = 402,480,098,358,943,872/623,699,229.80 - Step 6: Final answer
x = 645,311,199.90
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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.