Finding the Fourth Proportional to 398,958,743.80, 598,438,115.70 and 344,432,897.20
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Solution
The fourth proportional to 398,958,743.80, 598,438,115.70 and 344,432,897.20 is: 516,649,345.80
Step by Step Solution
- Step 1: Write the proportion equation
398,958,743.80 : 598,438,115.70 = 344,432,897.20 : x - Step 2: Convert to fraction form
398,958,743.80/598,438,115.70 = 344,432,897.20/x - Step 3: Cross multiply
398,958,743.80x = 598,438,115.70 × 344,432,897.20 - Step 4: Simplify right side
398,958,743.80x = 206,121,773,985,459,808 - Step 5: Solve for x
x = 206,121,773,985,459,808/398,958,743.80 - Step 6: Final answer
x = 516,649,345.80
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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.