Finding the Fourth Proportional to 521,644.91, 786,490.17 and 518,406.44
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Solution
The fourth proportional to 521,644.91, 786,490.17 and 518,406.44 is: 781,607.49
Step by Step Solution
- Step 1: Write the proportion equation
521,644.91 : 786,490.17 = 518,406.44 : x - Step 2: Convert to fraction form
521,644.91/786,490.17 = 518,406.44/x - Step 3: Cross multiply
521,644.91x = 786,490.17 × 518,406.44 - Step 4: Simplify right side
521,644.91x = 407,721,565,192.24 - Step 5: Solve for x
x = 407,721,565,192.24/521,644.91 - Step 6: Final answer
x = 781,607.49
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.