Finding the Fourth Proportional to 517,428,874.30, 776,143,311.45 and 415,392,202.30
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Solution
The fourth proportional to 517,428,874.30, 776,143,311.45 and 415,392,202.30 is: 623,088,303.45
Step by Step Solution
- Step 1: Write the proportion equation
517,428,874.30 : 776,143,311.45 = 415,392,202.30 : x - Step 2: Convert to fraction form
517,428,874.30/776,143,311.45 = 415,392,202.30/x - Step 3: Cross multiply
517,428,874.30x = 776,143,311.45 × 415,392,202.30 - Step 4: Simplify right side
517,428,874.30x = 322,403,879,443,630,336 - Step 5: Solve for x
x = 322,403,879,443,630,336/517,428,874.30 - Step 6: Final answer
x = 623,088,303.45
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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.