Finding the Fourth Proportional to 851,686.78, 1,277,479.77 and 319,163.26
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Solution
The fourth proportional to 851,686.78, 1,277,479.77 and 319,163.26 is: 478,726.00
Step by Step Solution
- Step 1: Write the proportion equation
851,686.78 : 1,277,479.77 = 319,163.26 : x - Step 2: Convert to fraction form
851,686.78/1,277,479.77 = 319,163.26/x - Step 3: Cross multiply
851,686.78x = 1,277,479.77 × 319,163.26 - Step 4: Simplify right side
851,686.78x = 407,724,607,977.25 - Step 5: Solve for x
x = 407,724,607,977.25/851,686.78 - Step 6: Final answer
x = 478,726.00
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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.