Finding the Fourth Proportional to 515,619,459.16, 711,572,040.99 and 289,598,273.08
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Solution
The fourth proportional to 515,619,459.16, 711,572,040.99 and 289,598,273.08 is: 399,655,270.15
Step by Step Solution
- Step 1: Write the proportion equation
515,619,459.16 : 711,572,040.99 = 289,598,273.08 : x - Step 2: Convert to fraction form
515,619,459.16/711,572,040.99 = 289,598,273.08/x - Step 3: Cross multiply
515,619,459.16x = 711,572,040.99 × 289,598,273.08 - Step 4: Simplify right side
515,619,459.16x = 206,070,034,242,714,976 - Step 5: Solve for x
x = 206,070,034,242,714,976/515,619,459.16 - Step 6: Final answer
x = 399,655,270.15
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.