Finding the Fourth Proportional to 512,645,900.36, 707,436,721.95 and 300,949,326.81
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Solution
The fourth proportional to 512,645,900.36, 707,436,721.95 and 300,949,326.81 is: 415,301,487.99
Step by Step Solution
- Step 1: Write the proportion equation
512,645,900.36 : 707,436,721.95 = 300,949,326.81 : x - Step 2: Convert to fraction form
512,645,900.36/707,436,721.95 = 300,949,326.81/x - Step 3: Cross multiply
512,645,900.36x = 707,436,721.95 × 300,949,326.81 - Step 4: Simplify right side
512,645,900.36x = 212,902,605,231,525,664 - Step 5: Solve for x
x = 212,902,605,231,525,664/512,645,900.36 - Step 6: Final answer
x = 415,301,487.99
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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.