Finding the Fourth Proportional to 685,353,208.29, 1,028,127,425.49 and 212,693,088.91
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Solution
The fourth proportional to 685,353,208.29, 1,028,127,425.49 and 212,693,088.91 is: 319,069,926.68
Step by Step Solution
- Step 1: Write the proportion equation
685,353,208.29 : 1,028,127,425.49 = 212,693,088.91 : x - Step 2: Convert to fraction form
685,353,208.29/1,028,127,425.49 = 212,693,088.91/x - Step 3: Cross multiply
685,353,208.29x = 1,028,127,425.49 × 212,693,088.91 - Step 4: Simplify right side
685,353,208.29x = 218,675,597,920,553,984 - Step 5: Solve for x
x = 218,675,597,920,553,984/685,353,208.29 - Step 6: Final answer
x = 319,069,926.68
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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.