Finding the Fourth Proportional to 419,665,574.88, 579,139,051.23 and 231,489,623.99
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Solution
The fourth proportional to 419,665,574.88, 579,139,051.23 and 231,489,623.99 is: 319,455,988.85
Step by Step Solution
- Step 1: Write the proportion equation
419,665,574.88 : 579,139,051.23 = 231,489,623.99 : x - Step 2: Convert to fraction form
419,665,574.88/579,139,051.23 = 231,489,623.99/x - Step 3: Cross multiply
419,665,574.88x = 579,139,051.23 × 231,489,623.99 - Step 4: Simplify right side
419,665,574.88x = 134,064,681,208,605,904 - Step 5: Solve for x
x = 134,064,681,208,605,904/419,665,574.88 - Step 6: Final answer
x = 319,455,988.85
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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.