Finding the Fourth Proportional to 665,343,198.90, 998,014,798.35 and 493,156,314.90
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Solution
The fourth proportional to 665,343,198.90, 998,014,798.35 and 493,156,314.90 is: 739,734,472.35
Step by Step Solution
- Step 1: Write the proportion equation
665,343,198.90 : 998,014,798.35 = 493,156,314.90 : x - Step 2: Convert to fraction form
665,343,198.90/998,014,798.35 = 493,156,314.90/x - Step 3: Cross multiply
665,343,198.90x = 998,014,798.35 × 493,156,314.90 - Step 4: Simplify right side
665,343,198.90x = 492,177,300,169,952,576 - Step 5: Solve for x
x = 492,177,300,169,952,576/665,343,198.90 - Step 6: Final answer
x = 739,734,472.35
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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.