Finding the Fourth Proportional to 515,398,383.24, 711,243,790.15 and 280,444,995.63
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Solution
The fourth proportional to 515,398,383.24, 711,243,790.15 and 280,444,995.63 is: 387,010,840.75
Step by Step Solution
- Step 1: Write the proportion equation
515,398,383.24 : 711,243,790.15 = 280,444,995.63 : x - Step 2: Convert to fraction form
515,398,383.24/711,243,790.15 = 280,444,995.63/x - Step 3: Cross multiply
515,398,383.24x = 711,243,790.15 × 280,444,995.63 - Step 4: Simplify right side
515,398,383.24x = 199,464,761,620,481,376 - Step 5: Solve for x
x = 199,464,761,620,481,376/515,398,383.24 - Step 6: Final answer
x = 387,010,840.75
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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.